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
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Rattlesnake mating sessions have been known to last more than 22 hours.
232
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Only 3% of bird species have penises.
0
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
Penguins have a gland above their eye that turns saltwater into freshwater.
12