One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Condoms were originally made of animal intestines or linen.
347