A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Lobsters have blue blood.
476
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Nicole Kidman is scared of butterflies.
65
Early American humans hunted car-size armadillos and used their shells for houses.
12