The seahorse is the only fish to have a neck.
12
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
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
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13