A pearl can be found in one of a thousand oysters, and only in one of three thousand mussels.
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.
Lions are the only cats that do not purr.
The largest rose bush is located in the US state Tombstone Arizona. It was planted in the 18th century and when it is in full bloom it has more than 200.000 roses!
Earth's rotation reaches a speed of half a kilometer per second.
The human orgasm lasts four minutes on average, while a pig’s orgasm lasts half an hour.
