Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
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
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Only 3% of bird species have penises.
0
Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156