A group of kittens is called a "kindle".
10
When cats are happy, they may squeeze their eyes shut.
10
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
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
There's a lizard known as the 'Jesus Lizard' that can run across water.
11