The only species of the Gymnure genus, found in Sumatra. "It is little known, but seems to possess more…
"Hedgehog is a quadruped distinguished by having the body covered with spines instead of hair. The skin…
A skinned hedgehog. This image is supposed to show the muscles of the back which contract to make the…
A fish with many small spikes that blows itself into a globular shape by swallowing air.
Amphidotus cordatus or Echinocardium cordatum, commonly called a sea urchin, viewed from above. a, anterior…