The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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Dogs have been man's pet for over 14,000 years.
224
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Cows can sleep standing up, but they can only dream lying down.
745
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109