One litter of kittens can be produced by more than one father.
57
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
When it comes time to give birth, the female shark loses her appetite so she won't be tempted to eat her own pups.
280
A tuna fish can swim 100 miles in a single day!
29
Chained dogs are 3 times more likely to bite than unchained dogs.
34
Crocodiles swallow stones to help them dive deeper.
55