The Basenji dog is the only dog that is not able to bark.
4
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
A 42-foot sperm whale has about 7 tons of oil in it.
209