"Stringops habroptilus, the Kakapo or Tarapo of New Zealand has sap-green upper parts, with yellow middles to the feathers and transverse brown markings; yellower lower surface; and browner cheeks, remiges, and rectrices. The soft plumage, the disc of feathers round the eye, and the nocturnal habits have given this bird the name Owl-Parrot." A. H. Evans, 1900

Kakapo

"Stringops habroptilus, the Kakapo or Tarapo of New Zealand has sap-green upper parts, with yellow middles…

Strix flammea, the nocturnal White Screech-, or Barn Owl, is orange-buff above, with brown, grey and white markings, but is white below and on the complete facial discs. The dark grey phase has white parts tinged with orange and a few distinct blackish spots beneath. The legs are entirely, and the toes partially, covered with bristly feathers." A. H. Evens, 1900

Screech Owl

Strix flammea, the nocturnal White Screech-, or Barn Owl, is orange-buff above, with brown, grey and…

An illustration of two bears.

Bears

An illustration of two bears.

"Speotyto cunicularia, the Burrowing Owl, a comparatively long-legged and short -winged bird with incomplete facial discs and unfeathered toes, is umber-brown varied with yellowish and white, the lower parts becoming lighter." A. H. Evans

Two Burrowing Owls by the Mountains

"Speotyto cunicularia, the Burrowing Owl, a comparatively long-legged and short -winged bird with incomplete…

An illustration of a flock of birds flying.

Birds

An illustration of a flock of birds flying.

An illustration of a herd of sheep.

Sheep

An illustration of a herd of sheep.

"Cats purr, dogs bark, cocks crow, a cow lows, a donkey brays, an eagle screams, parrots talk, spiders tick, mankind laugh and cry." -Trowbridge, 1866

Animal Rebus

"Cats purr, dogs bark, cocks crow, a cow lows, a donkey brays, an eagle screams, parrots talk, spiders…

"Archaeornithes is at present represented by but one member, the first undoubted fossil Bird, made known in 1861 by Andreas Wagner form the Jurassic slate formation of Solenhofen in Bavaria, and now preserved in a British Museum. This he described under the name of Griphosaurus; but as Hermann von Meyer had already bestowed the title of Archaeopteryx Lithographica upon a bird, presumably identical, a feather of which had been obtained from the above system." A. H. Evans, 1900 This sample was obtained from the Limestone in Berlin

Archaeopteryx Lithographica

"Archaeornithes is at present represented by but one member, the first undoubted fossil Bird, made known…

"On the morrow, as they went on their journey, and drew nigh unto the city, Peter went up upon the housetop to pray about the sixth hour: And he became very hungry, and would have eaten: but while they made ready, he fell into a trance, And saw heaven opened, and a certain vessel descending unto him, as it had been a great sheet knit at the four corners, and let down to the earth: Wherein were all manner of fourfooted beasts of the earth, and wild beasts, and creeping things, and fowls of the air. And there came a voice to him, Rise, Peter; kill, and eat. But Peter said, Not so, Lord; for I have never eaten any thing that is common or unclean. And the voice spake unto him again the second time, What God hath cleansed, that call not thou common." Acts 10:9-15 KJV

Peter's Vision on the Housetop

"On the morrow, as they went on their journey, and drew nigh unto the city, Peter went up upon the housetop…

James Bennett (New York Herald Editor) contemplates more attacks on President Grant: "If Grant isn't careful, I'll let the wild animals loose again."

Bennett Contemplates Attacks on Grant

James Bennett (New York Herald Editor) contemplates more attacks on President Grant: "If Grant isn't…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Bicycle Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Bicycle Crossing, Color

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Bicycle Crossing, Outline

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Bicycle Crossing, Silhouette

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Pedestrian Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Pedestrian Crossing, Color

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Pedestrian Crossing, Outline

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Pedestrian Crossing, Silhouette

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Deer Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Deer Crossing, Color

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Deer Crossing, Outline

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Deer Crossing, Silhouette

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Cattle Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Cattle Crossing, Color

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Cattle Crossing, Outline

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Cattle Crossing, Silhouette

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Snowmobile Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Snowmobile Crossing, Color

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Snowmobile Crossing, Outline

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Snowmobile Crossing, Silhouette

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Equestrian Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Equestrian Crossing, Color

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Equestrian Crossing, Outline

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Equestrian Crossing, Silhouette

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Handicap Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Handicap Crossing, Color

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Handicap Crossing, Outline

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Handicap Crossing, Silhouette

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

"Argent, two foxes counter salient. COUNTER SALIENT. Two animals leaping different ways from each other." -Hall, 1862

Foxes Counter Salient

"Argent, two foxes counter salient. COUNTER SALIENT. Two animals leaping different ways from each other."…

"Or, two lions passant counter passant gules, the uppermost facing the sinister side of the escutcheon, both collared sable, garnished argent. COUNTER PASSANT. Two animals passing the contrary way to each other." -Hall, 1862

Lions Counter Passant

"Or, two lions passant counter passant gules, the uppermost facing the sinister side of the escutcheon,…

Erosion is the removal of solids (sediment, soil, rock and other particles) in the natural environment. It usually occurs due to transport by wind, water, or ice; by down-slope creep of soil and other material under the force of gravity; or by living organisms, such as burrowing animals, in the case of bioerosion. This figure shows the effects of erosion on the rock formation along the coast of the Mendocino Coast in California.

Mendocino Coast Erosion

Erosion is the removal of solids (sediment, soil, rock and other particles) in the natural environment.…

Trilobites ("three-lobes") are extinct marine arthropods that form the class Trilobita. Why the trilobites became extinct is not clear. Their numbers began to decrease with the appearance of the first sharks and other early gnathostomes (jawed vertebrates) in the Silurian and their subsequent rise in diversity during the Devonian period. Trilobites may have provided a rich source of food for these new animals.

Dicellocephalus Minnesotenis a Trilobite

Trilobites ("three-lobes") are extinct marine arthropods that form the class Trilobita. Why the trilobites…

Trilobites ("three-lobes") are extinct marine arthropods that form the class Trilobita. Why the trilobites became extinct is not clear. Their numbers began to decrease with the appearance of the first sharks and other early gnathostomes (jawed vertebrates) in the Silurian and their subsequent rise in diversity during the Devonian period. Trilobites may have provided a rich source of food for these new animals. Fossilised trilobites are often found enrolled (curled up) like modern woodlice for protection; evidence suggests enrollment helped protect against exploitation of arthropod cuticle weakness by Anomalocarid predator attacks.

Dicellocephalus Minnesotenis a Trilobite

Trilobites ("three-lobes") are extinct marine arthropods that form the class Trilobita. Why the trilobites…

Cuttlefish are marine animals of the order Sepiida belonging to the Cephalopoda class. Despite their name, cuttlefish are not fish but molluscs. Cuttlefish have an internal shell (cuttlebone), large W-shaped pupils, and eight arms and two tentacles furnished with denticulated suckers, with which they secure their prey.

Cuttlefish

Cuttlefish are marine animals of the order Sepiida belonging to the Cephalopoda class. Despite their…

Baculites is a genus of extinct marine animals in the Phylum Mollusca and Class Cephalopoda. They are a nearly straight-shelled type of heteromorph ammonite. This fragment is of a straight chambered shell, Baculites ovatus of Mesozoic Time, belonging to the Ammonite family.

Coiled Chambered Shell

Baculites is a genus of extinct marine animals in the Phylum Mollusca and Class Cephalopoda. They are…

There are two fiber types, slow-twitch muscle, or fast-twitch muscle. Most animals have some combination of these two fiber types.

Mustle Fiber

There are two fiber types, slow-twitch muscle, or fast-twitch muscle. Most animals have some combination…

Amoung the simplest one-celled animals living in the ooze at the bottom of nearly every freshwater stream or pond is the Amoeba, whose body is barely visible to the unaided eye. Here we see the amoeba, highly magnified, showing(c.v.) pulsating vacuole; (f) food particle; (n) nucleus. (7B) The shape of the same individual 30 seconds later.

Amoeba

Amoung the simplest one-celled animals living in the ooze at the bottom of nearly every freshwater stream…

In the Trichina, a parasitic roundworm, the bodies of several animals, particularly the rat, are host for developing eggs. If the rat is eaten by a carnivorous animal, these excessively small young are liberated during the process of digestion and rapidly assume the adult condition in the alimentary canal, giving rise to young which pursue again the same course of development.

Roundworm

In the Trichina, a parasitic roundworm, the bodies of several animals, particularly the rat, are host…

The rotifers or wheel-animalcules are relatively small and beautiful organisms, rarely ever longer that a third of an inch. The rotifers make up a phylum of microscopic and near-microscopic pseudocoelomate animals. At first sight they they might be mistaken for one-celled animals, but the presence of a digestive tract and of reproductive elements soon dispels such a belief.

Rotifers

The rotifers or wheel-animalcules are relatively small and beautiful organisms, rarely ever longer that…

The larger, more useful and more familiar Crustacea belong to the subclass Malacostraca. It comprises such animals as the shrimps, crayfish, lobsters, crabs, and a number of other forms. The simplist of these are the opossum-shrimps (Mysis americana). In general appearance they resemle crayfishes or prawns. They are readily distinguished by the two-branched thoracic feet.

Shrimp

The larger, more useful and more familiar Crustacea belong to the subclass Malacostraca. It comprises…

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves. These sound waves come to animals through the air, through water, or throught both air and water. Here we see the auditory organ of a mollusk showing the (a) auditory nerve, (b) the outer wall of connective tissue, (c) cells with auditory hairs, and (d) otolith.

Sense of Hearing

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves.…

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves. These sound waves come to animals through the air, through water, or throught both air and water. Here we see the auditory organ of a cray fish showing the auditory sac at the base.

Sense of Hearing

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves.…

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves. These sound waves come to animals through the air, through water, or throught both air and water. Here we see the auditory organ of a grasshopper located in the abdomen.

Sense of Hearing

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves.…

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves. These sound waves come to animals through the air, through water, or throught both air and water. Here we see the auditory organ of a cricket showing the auditory organ in the foreleg.

Sense of Hearing

Hearing is the perception of certain vibrations of bodies. These vibrations give rise to sound waves.…

Sound making amoung animals serves to aid in frightening away enemies or in warnng companions of their approach, for recognition among mates and members of a band or species. It also aids in the attracting and wooing of mates, and the interchange of information. The annoying, high-pitched, whining sound mosquitoes make is caused by their wings rapidly beating hundred of times per second. This diagram shows the auditory hairs on the antennae of a mosquito.

Sound Making

Sound making amoung animals serves to aid in frightening away enemies or in warnng companions of their…

In animals there are different types of sight. Some have what we call simple eyes. The simplest eyes are not capable of forming an image or picture of external objects. They only make the animal able to distinguish between light and darkness or shadow. This diagram shows the simple eye or a jellyfish.

Sense of Sight

In animals there are different types of sight. Some have what we call simple eyes. The simplest eyes…

Animals alive today are but a fraction of all that have been before our time. We are continually discovering species of animals long since vanished form the fact of the earth. The mammoth is notable the among fossilized remains that have been found frozen in the ice of northern Siberia. In France this drawing of a mammoth was found, evidently sketched by a man living in that time.

Mammoth

Animals alive today are but a fraction of all that have been before our time. We are continually discovering…

"Argent, a boar's head erect, and erased. ERECT. This is said of any animal or parts of animals, naturally horizontal, being placed in a perpendicular direction." -Hall, 1862

Boar's Head Erect

"Argent, a boar's head erect, and erased. ERECT. This is said of any animal or parts of animals, naturally…

"A swan's head erased at the neck, ducally gorged or. GORGED. Any animals, particularly birds, that have collars round the neck, are said to be gorged." -Hall, 1862

Swan Gorged

"A swan's head erased at the neck, ducally gorged or. GORGED. Any animals, particularly birds, that…

An illustration of two girls and a boy playing with a pack of dogs.

Two Girls & Boy Playing with Dogs

An illustration of two girls and a boy playing with a pack of dogs.