The average mosquito has 47 teeth.
If a book of average size would contain all of the insect’s names, it would have about 6.000 pages, as our planet has more than 900.000 known species.
Sharks will change their sharp triangle teeth (in five rows) continuously throughout their lifetime. They can change up to thirty thousand teeth. It is believed that the bite force of a white shark is equal to three tons.
On average, adults laugh fifteen times a day.
In 1666, the fire that destroyed most of the city of London, at the same time has ended the plague. Mostly because the fire killed infected rats who were the carriers of the disease.
Snake venom is dangerous only if it gets into the bloodstream. If ingested it is metabolized in the intestines and becomes harmless. Therefore, in Vietnam and Thailand, where they eat poisonous snakes, the rattlesnake is highly desirable.
