@petfacts

A person standing still 300 yards away is almost invisible to a dog. But a dog can easily identify its owner standing a mile away if the owner is waving his arms.

A dog's sense of smell is so powerful that they can detect changes in a person's emotional state.

Dogs do dream! Dogs and humans have the same type of slow wave sleep (SWS) and rapid eye movement (REM) and during this REM stage dogs can dream. The twitching and paw movements that occur during their sleep are signs that your pet is dreaming

The Basenji is the only barkless dog.

Dogs have no sense of time.

The Girl Scouts and Boy Scouts both offer merit badges in dog care.

Cats' hearing is much more sensitive than humans and dogs.

There are 703 breeds of purebred dogs.

This dog, Naki'o, lost all of his legs to frostbite in Colorado, but now has four prosthetic legs and can run around like normal.

There are up to 60 million feral cats in the United States alone.

The heaviest cat on record is Himmy, a Tabby from Queensland, Australia. He weighed nearly 47 pounds (21 kg). He died at the age of 10.

The biggest wildcat today is the Siberian Tiger. It can be more than 12 feet (3.6 m) long (about the size of a small car) and weigh up to 700 pounds (317 kg).

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.