Cows can sleep standing up, but they can only dream lying down.
745
The Basenji dog is the only dog that is not able to bark.
4
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Cats sleep for 70% of their lives.
8
The reindeer is the only mammal that can see UV light.
17