Male monkeys lose the hair on their heads in the same way men do.
41
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Crocodiles swallow stones to help them dive deeper.
55
A rat can go without water longer than a camel can.
26
The poison-arrow frog has enough poison to kill about 2,200 people!
55
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
The penguin is the only bird that can swim, but cannot fly.
1
