The largest earthworm on record was found in South Africa and measured 22 feet.
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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
The colossal squid has the largest eyes in the world.
4
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The Basenji dog is the only dog that is not able to bark.
4
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12