Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
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
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The elephant brain weighs about 6,000g.
274
George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7