A female ferret will die if it goes into heat and cannot find a mate.
143
It was discovered on a space mission that a frog can throw up.
52
The lifespan of mammals is about 1 and a half billion heartbeats.
127
A group of geese on the ground is a gaggle, a group of geese in the air is a skein!
19
When cats are happy, they may squeeze their eyes shut.
10
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
An albatross can sleep while it flies!
36