Sharks, like other fish, have their reproductive organs in their chests.
248
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Squirrels forget where they hide about half of their nuts.
698
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
The cat brain weighs about 30g.
167