Lobsters have blue blood.
476
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Sharks, like other fish, have their reproductive organs in their chests.
248
A lion in the wild usually makes no more than twenty kills a year.
186
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
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
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