When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
A scorpion can hold its breath for up to 6 days.
19
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Only 3% of bird species have penises.
0
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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