The reindeer is the only mammal that can see UV light.
17
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Cows can sleep standing up, but they can only dream lying down.
745
Cats sleep for 70% of their lives.
8
A 42-foot sperm whale has about 7 tons of oil in it.
209