Only 3% of bird species have penises.
0
Gorillas can catch human colds and other illnesses.
205
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Giant Anteaters' front legs look like a panda.
48
The seahorse is the only fish to have a neck.
12