Cows can sleep standing up, but they can only dream lying down.
745
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
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
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268