If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Rattlesnake mating sessions have been known to last more than 22 hours.
232
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19