A Great Dane named "Just Nuisance" is the only dog to have officially enlisted in the Royal Navy.
Humans generally see better than dogs, but dogs see much better when there is low-light.
Cats can be right-pawed or left-pawed.
Cats only use their meows to talk to humans, not each other. The only time they meow to communicate with other felines is when they are kittens to signal to their mother.
When a family cat died in ancient Egypt, family members would mourn by shaving off their eyebrows. They also held elaborate funerals during which they drank wine and beat their breasts. The cat was embalmed with a sculpted wooden mask and the tiny mummy was placed in the family tomb or in a pet cemetery with tiny mummies of mice.
The cat appears to be the only domestic companion animal not mentioned in the Bible.
Dogs can understand up to 250 words and gestures.
The ancestor of all domestic cats is the African Wild Cat which still exists today.
A cat's field of vision is about 200 degrees.
Siamese kittens are born white because of the heat inside the mother's uterus before birth. This heat keeps the kittens' hair from darkening on the points.
The most popular breed of dog in the US is the Labrador Retriever.
U.S. Customs dogs "Rocky" and "Barco" were so good at patrolling the border that Mexican drug lords put a $300,000 bounty on their heads.
A cat can jump 5 times as high as it is tall.
One unspayed female dog, her mate and their puppies can produce 67,000 puppies in six years.
When a cat drinks, its tongue - which has tiny barbs on it - scoops the liquid up backwards.