A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A lion in the wild usually makes no more than twenty kills a year.
186
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
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
Only 3% of bird species have penises.
0