A type of Ganoid fish. Ganoid is an order of fishes included seven living genera, whose members are all found in fresh water. The members of these genera are distinguished from their nearest allies, the teleosteans, or bony fish, by the presence of a spiral valve in the intestine, the fact that the tail is frequently heterocercal or unequally lobed, the skeleton often, at least in part, cartilaginous, and the skin furnished with bony scales or scutes (ganoid scales). This particular type (Acipenser) is a Sturgeon.

Acipenser Sturio

A type of Ganoid fish. Ganoid is an order of fishes included seven living genera, whose members are…

Bas-relief of early amusements at the amphitheatre.

Amphitheatrical Amusements

Bas-relief of early amusements at the amphitheatre.

The inner ear of a reptile (top), a bird (left) and an ox (right).

Animal Ears

The inner ear of a reptile (top), a bird (left) and an ox (right).

A mammal on a tree branch.

Animal in tree

A mammal on a tree branch.

This is an animal plaything, a children's toy designed for entertainment.

Toy Animal

This is an animal plaything, a children's toy designed for entertainment.

"A term etymologically applicable to any very small animal, and limited in actual use to those which are microscopical. Animalcules exist in prodigious numbers, and of many different kinds, their size being such that multitudes of them find ample space for all the movements of an active life within a single drop of water; and they abound almost wherever there is moisture, at least wherever organic matter is present." — Chambers' Encyclopedia, 1875

Animalcule

"A term etymologically applicable to any very small animal, and limited in actual use to those which…

An articulate radiate from the Paleozoic time, Orthoceras junceum.

Orthoceras Articulate

An articulate radiate from the Paleozoic time, Orthoceras junceum.

There are floral designs and a lion pictured in the center of the banner.

Banner

There are floral designs and a lion pictured in the center of the banner.

A barn used to house horses and cattle.

Cattle and Horse Barn

A barn used to house horses and cattle.

A barn used primarily to house sheep.

Sheep Barn

A barn used primarily to house sheep.

A species of goose necked barnacles, a crustacean known for attaching itself to objects and other animals.

Goose Necked Barnacle

A species of goose necked barnacles, a crustacean known for attaching itself to objects and other animals.

An illustration of a polar bear standing on an iceberg.

Polar Bear

An illustration of a polar bear standing on an iceberg.

An illustration of a walking bear wearing overalls.

Walking Bear

An illustration of a walking bear wearing overalls.

An illustration of two polar bears standing on icebergs with large icebergs surrounding them.

Polar Bears on Iceberg

An illustration of two polar bears standing on icebergs with large icebergs surrounding them.

Two Scandinavian bears.

Scandinavian Bears

Two Scandinavian bears.

A nocturnal, semi-aquatic rodent.

Beavers

A nocturnal, semi-aquatic rodent.

An illustration of a bird in a hand.

Bird in Hand

An illustration of a bird in a hand.

Five birds.

Five Birds

Five birds.

Three birds sitting in a tree.

Three Birds

Three birds sitting in a tree.

Two birds.

Two Birds

Two birds.

A family of bison.

American Bison

A family of bison.

An illustration of a blackbird.

Blackbird

An illustration of a blackbird.

"Argent, a boar's head proper couped. COUPED. The head or limbs of any animal cut close is called couped." -Hall, 1862

Boar Couped

"Argent, a boar's head proper couped. COUPED. The head or limbs of any animal cut close is called couped."…

"Argent, a boar's head, erased proper, tusked gules. TUSKED. Any animal having tusks of a different tincture from its body is said to he tusked." -Hall, 1862

Boar Tusked

"Argent, a boar's head, erased proper, tusked gules. TUSKED. Any animal having tusks of a different…

"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 species of wild pig.

Wild Boar

A species of wild pig.

An illustration of a boy watching two rabbits dig two separate holes but believes that it is one large rabbit.

Boy Watching Two Rabbits Dig Holes

An illustration of a boy watching two rabbits dig two separate holes but believes that it is one large…

An illustration of a boy watching two rabbits dig holes.

Boy Watching Two Rabbits Dig Holes

An illustration of a boy watching two rabbits dig holes.

A pair of African buffaloes.

African Buffaloes

A pair of African buffaloes.

A Spanish donkey.

Burro

A Spanish donkey.

A cartoon of a snake trying to eat a canary.

Canary and Snake

A cartoon of a snake trying to eat a canary.

This leg of candelabrum base is an antique design of an animal's foot.

Leg of Candelabrum Base

This leg of candelabrum base is an antique design of an animal's foot.

A cat wearing a bow.

Cat

A cat wearing a bow.

The common cat.

Cat

The common cat.

An illustration of a domesticated cat.

Cat

An illustration of a domesticated cat.

An illustration of a cat wearing and bonnet and two kittens tiptoeing.

Cats & Kitten Tiptoeing

An illustration of a cat wearing and bonnet and two kittens tiptoeing.

The eye of a cat in its contracted state.

Contracted Cat Eye

The eye of a cat in its contracted state.

The eye of a cat in its dilated state.

Dilated Cat Eye

The eye of a cat in its dilated state.

An illustration of a black cat sitting with its tail curled.

Black Cat Sitting

An illustration of a black cat sitting with its tail curled.

An illustration of a cat wearing a bow around its neck and reading a book.

Cat Wearing Bow and Reading Book

An illustration of a cat wearing a bow around its neck and reading a book.

The paw of a cat.

Cat's Paw

The paw of a cat.

The Angora cat, a breed of domestic cat.

Angora Cat

The Angora cat, a breed of domestic cat.

An angry cat.

Angry Cat

An angry cat.

A domestic cat.

Domestic Cat

A domestic cat.

Electric catfish is the common name for the catfish (order Siluriformes) family Malapteruridae. This family includes two genera, Malapterurus and Paradoxoglanis with 19 species. Several species of this family have the ability to produce an electric shock of up to 350 volts using electroplaques of an electric organ. Electric catfish are found in tropical Africa and the Nile River. Electric catfish are usually nocturnal and feed primarily on other fish, incapacitating their prey with electric discharges.

Electric Catfish

Electric catfish is the common name for the catfish (order Siluriformes) family Malapteruridae. This…

An illustration of a mother and father cat talking near baby cats in a bassinet.

Mother & Father Cats Talking Near Baby Cats

An illustration of a mother and father cat talking near baby cats in a bassinet.

The common chameleon (Chamaeleo chamaeleon) is a lizard that is well known for its camouflage ability.

Common Chameleon

The common chameleon (Chamaeleo chamaeleon) is a lizard that is well known for its camouflage ability.

A goat-antelope species commonly found in Europe.

Chamois

A goat-antelope species commonly found in Europe.

A cheetah and an ocelot.

Cheetah and Ocelot

A cheetah and an ocelot.

An illustration of a boy leaning against a tree.

Child Leaning Against Tree

An illustration of a boy leaning against a tree.

A small striped squirrel.

Chipmunk

A small striped squirrel.

A living coral, a marine organism in the class Anthozoa.

Coral

A living coral, a marine organism in the class Anthozoa.

A fossilized coral.

Coral Fossil

A fossilized coral.

"The Egyptian couches were executed in great taste. They were of wood, with one end raised, and receding in a graceful curve; the feet, like those of many of the chairs were fashioned to resemble those of animals." — Goodrich, 1844

Egyptian couch

"The Egyptian couches were executed in great taste. They were of wood, with one end raised, and receding…

An illustration of a cow.

Cow

An illustration of a cow.

A hereford cow, most suitable for meat.

Beef Cow

A hereford cow, most suitable for meat.

A shorthorn bull, a kind of beef cow.

Beef Cow

A shorthorn bull, a kind of beef cow.

A dairy cow, suitable for the production of milk.

Dairy Cow

A dairy cow, suitable for the production of milk.

A typical dual-purpose Shorthorn cow.

Dual-purpose Cow

A typical dual-purpose Shorthorn cow.

A breed of cattle used primarily for beef.

Hereford Cow

A breed of cattle used primarily for beef.