Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Two dogs were among the Titanic survivors.
262
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The elephant brain weighs about 6,000g.
274