A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
A domestic cat can sprint at about 31 miles per hour.
274
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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 sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255