Cattle are the only mammals that pee backwards.
33
A 42-foot sperm whale has about 7 tons of oil in it.
209
A baby octopus is about the size of a flea at birth.
40
A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
World's heaviest primates: morbidly obese humans. After that: gorillas at 485 lbs.
106
The female pigeon cannot lay eggs if she is alone. In order for her ovaries to function, she must be able to see another pigeon.
65
Drivers kill more deer than hunters do.
660
