An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The Basenji dog is the only dog that is not able to bark.
4
Denmark has twice as many pigs as there are people.
66
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
The male seahorse carries babies and 'gives birth' to them instead of the female.
7