Sheep, goats, octopuses, and toads have rectangular pupils.
7
The cat brain weighs about 30g.
167
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
A dairy cow can produce more milk when listening to music.
446
Jellyfish as a species are actually older than dinosaurs and sharks.
383