A dairy cow can produce more milk when listening to music.
446
Only 3% of bird species have penises.
0
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
The reindeer is the only mammal that can see UV light.
17
Sharks have been on the planet longer than trees.
14