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
Mosquitoes don't just bite you, they also pee on you.
11
Most tropical marine fish could survive in a tank filled with human blood.
54
Some species of fish have voices!
81
The giant squid has the largest eyes in the world.
62
According to scientific studies, a rat's performance in a maze can be improved by playing music written by Mozart.
46
The oldest pig in the world lived to the age of 68.
65