Lobsters have blue blood.
476
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Sheep, goats, octopuses, and toads have rectangular pupils.
7