The Egyptian Mau is probably the oldest breed of cat.  In fact, the breed is so ancient that its name is the Egyptian word for 'cat'.  

Cats use their whiskers to calculate if they can get through a tight space.

Female cats tend to be right-pawed, while male cats are more often left-pawed.

The furry tufts on the inside of cats' ears are called 'ear furnishings'.  They insulate the ear and help filter out sounds and debris.  It's important to keep ears healthy and parasite free.