Penguins have a gland above their eye that turns saltwater into freshwater.
12
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Camels and llamas can cross breed. The offspring is called a ‘Cama’.
10
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Sharks, like other fish, have their reproductive organs in their chests.
248