The Basenji dog is the only dog that is not able to bark.
4
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Female kangaroos have three vaginas.
2
In order to enhance the taste, Japanese macaque wash their food in salt water before they eat. They also make snowballs for fun!
7
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Dogs have been man's pet for over 14,000 years.
224
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6