An elephant's tooth can weigh as much as 12 pounds.
24
A blue whale's aorta (the main blood vessel) is large enough for a human to crawl through.
52
Dogs and cats, like humans, are either right or left handed... or is that paws?!
34
A rat can go without water longer than a camel can.
26
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
It's possible to lead a cow upstairs, but not downstairs.
50
