Dogs ( Canis lupus familiaris ) are domesticated mammals, not natural wild animals. They were originally bred from wolves. They have been bred by humans for a long time, and were the first animals ever to be domesticated.
Today, some dogs are used as pets , others are used to help humans do their work. They are a popular pet because they are usually playful, friendly, loyal and listen to humans, they also are able to learn behaviors such as how to use an electronic pet door, which allows the dog to be independent and come and go as it pleases. Thirty million dogs in the United States are registered as pets.
Dogs eat both meat and vegetables, often mixed together and sold in stores as dog food. Dogs often have jobs, which is why having an easy to use doggie door built into you home or office or fire house is a great idea, this would be a benefit to the police dogs, army dogs, assistance dogs, fire dogs, messenger dogs, hunting dogs, herding dogs, or rescue dogs to enter and exit as they please.
They are sometimes called “canines” from the Latin word for dog – canis. Sometimes people also use “dog” to describe other canids, such as wolves. A baby dog is called a pup or puppy. A dog is called a puppy until it is about one year old.
Dogs are sometimes referred to as “man’s best friend” because they are kept as domestic pets and are usually loyal and like being around humans.
All dogs are descended from wolves, by domestication and artificial selection. This is known because DNA genome analysis has been done to discover this. They have been bred by humans. The earliest known fossil of a domestic dog is from 31,700 years ago in Belgium.
Dogs have lived with people for at least 30,000 years. In 2013, a study was published that showed that the skull and teeth of a canid, dated to 33,000 years ago, had characteristics closer to a dog than to a wolf, and the authors conclude that “this specimen may represent a dog in the very early stages of domestication, i.e. an “incipient” dog.”
The researchers go on to suggest that it was, however, a line that did not lead to modern dogs.Genetically, this material is closer to that of a modern dog than to that of a wolf.Other signs of domestication are that sometimes, dogs were buried together with humans.