The Basenji dog is the only dog that is not able to bark.
4
A puppy is born blind, deaf, and toothless.
16
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
A scorpion can hold its breath for up to 6 days.
19
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12