There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
Cats and dogs can hear ultrasound.
350
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
Penguins have a gland above their eye that turns saltwater into freshwater.
12
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
Dogs have been man's pet for over 14,000 years.
224
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9