One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
The octopus does not have a blind spot.
273
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Cats and dogs can hear ultrasound.
350
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Domestic pigs average a top speed of about 11 miles per hour.
182
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