A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The cat brain weighs about 30g.
167
Dolphins have names for one another.
18
A group of pugs is called a grumble.
10
Tigers, leopards, and jaguars love "Calvin Klein's Obsession for Men". The scent is used to attract animals to cameras in the wilderness, and was even a turn on for one pair of Jaguars who were subject to it.
17