Sloths take two weeks to digest their food.
243
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
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
Gorillas can catch human colds and other illnesses.
205
Domestic pigs average a top speed of about 11 miles per hour.
182
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12