Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
When cats are happy, they may squeeze their eyes shut.
10
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255