A blue whale's heart is the size of a Volkswagen Beetle!
37
Polar bear fur is not white, it's clear.
74
A woodpecker can peck twenty times a second.
28
The technical term for a cat’s hairball is a “bezoar.”
117
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Rats can tell the difference between two human languages.
49
The average cat sleeps about 2/3 of the day.
203