Rattlesnake mating sessions have been known to last more than 22 hours.
232
Female kangaroos have three vaginas.
2
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255