Dolphins nap with one eye open.
-7
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
A cat's jaws cannot move sideways.
194
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
A blue whale's aorta (the main blood vessel) is large enough for a human to crawl through.
52
The pea aphid insect explodes itself thereby sacrificing its life to protect its relatives from predators.
3
The penguin is the only bird that can swim, but cannot fly.
1
An adult giraffe's tongue is 17 inches long.
28