One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The elephant brain weighs about 6,000g.
274
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
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
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Giant Anteaters' front legs look like a panda.
48