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
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
A puppy is born blind, deaf, and toothless.
16
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
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
The largest earthworm on record was found in South Africa and measured 22 feet.
151
Cats recognise the voice of their owner, but never evolved to care.
22