The reindeer is the only mammal that can see UV light.
17
Whales and dolphins can't taste anything other than salt.
11
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
A puppy is born blind, deaf, and toothless.
16