A group of kittens is called a "kindle".
10
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
Cows can sleep standing up, but they can only dream lying down.
745
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The reindeer is the only mammal that can see UV light.
17
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10