The seahorse is the only fish to have a neck.
12
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
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
The elephant brain weighs about 6,000g.
274
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328