Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Two dogs were among the Titanic survivors.
262
Cats sleep for 70% of their lives.
8
The oldest recorded elephant lived for 82 years.
213
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Sloths take two weeks to digest their food.
243