Penguins have a gland above their eye that turns saltwater into freshwater.
12
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The elephant brain weighs about 6,000g.
274
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
One in three dog owners say they have talked to their pets on the phone.
427