The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
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
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
The largest earthworm on record was found in South Africa and measured 22 feet.
151
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
A scorpion can hold its breath for up to 6 days.
19