The cat brain weighs about 30g.
167
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The seahorse is the only fish to have a neck.
12
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
A domestic cat can sprint at about 31 miles per hour.
274
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402