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
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
The reindeer is the only mammal that can see UV light.
17
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17