Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
A giraffe's kick is so powerful that it can decapitate a lion.
216
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Mosquitoes don't just bite you, they also pee on you.
11
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A lion in the wild usually makes no more than twenty kills a year.
186
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271