When cats are happy, they may squeeze their eyes shut.
10
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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Parrot parents "name" their children with a signature call.
112
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
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
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
A cat can jump FIVE TIMES as high as it is tall!
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