It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
The octopus does not have a blind spot.
273
George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Condoms were originally made of animal intestines or linen.
347