A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Female kangaroos have three vaginas.
2
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Parrot parents "name" their children with a signature call.
112
Nicole Kidman is scared of butterflies.
65
Moths are unable to fly during an earthquake.
328