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
Condoms were originally made of animal intestines or linen.
347
Only 3% of bird species have penises.
0
Jellyfish as a species are actually older than dinosaurs and sharks.
383
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
The seahorse is the only fish to have a neck.
12