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
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The largest earthworm on record was found in South Africa and measured 22 feet.
151
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79