Cats purr at the same frequency as an idling diesel engine, about 26 cycles per second.
The wetness of a dog's nose is essential for determining what direction a smell is coming from.
In 1987, cats overtook dogs as the number one pet in America (about 50 million cats resided in 24 million homes in 1986). About 37% of American homes today have at least one cat.
President Calvin Coolidge owned at least a dozen dogs.
Dogs are about as smart as a two- or three-year-old child. This means they can understand about 150-200 words, including signals and hand movements with the same meaning as words.
The cat appears to be the only domestic companion animal not mentioned in the Bible.
The cheetah is the world's fastest land mammal. It can run at speeds of up to 70 miles an hour (113 kilometers an hour).
Tigers are excellent swimmers and do not avoid water.
The way you treat kittens in the early stages of it's life will render it's personality traits later in life.
Cats spend nearly 1/3 of their waking hours cleaning themselves.
Dogs have twice as many muscles to move their ears as humans, if you're looking for unusual facts about dogs!
Cats do not think that they are little people. They think that we are big cats. This influences their behavior in many ways.
Most dogs have 18 or more muscles to tilt, rotate, and move their ears.
The largest dog was an English Mastiff who weighed 343 pounds.
Cats dislike citrus scent.