One in three dog owners say they have talked to their pets on the phone.
427
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
There's a rare breed of pig that looks like a sheep.
14
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12