Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
One in three dog owners say they have talked to their pets on the phone.
427
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Dogs have been man's pet for over 14,000 years.
224
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
8
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16