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  1. Dog | History, Domestication, Physical Traits, Breeds, & Facts

    Dec 7, 2025 · What is a dog? A dog is a domesticated mammal of the family Canidae and the order Carnivora. Its scientific name is Canis lupus familiaris. Dogs are a subspecies of the …

  2. Dog - Breeds, Temperament, History | Britannica

    Dec 7, 2025 · Dog - Breeds, Temperament, History: There are about 400 breeds of purebred dogs worldwide. A purebred dog has a genealogy that can be traced for three generations within the …

  3. dog - Kids | Britannica Kids | Homework Help

    Dogs are mammals with sharp teeth, an excellent sense of smell, and a fine sense of hearing. Each of a dog’s four legs ends in a foot, or paw, with five toes.

  4. Dog - Companion, Hunting, Protection | Britannica

    Dec 7, 2025 · Dog - Companion, Hunting, Protection: Dogs have played an important role in human history and were among the first domesticated animals. They have served as hunting …

  5. Pit bull | Size, Types, Life Expectancy & Temperament | Britannica

    Oct 27, 2025 · The pit bull is a fighting dog developed in the British Isles in the 19th century for hunting, specifically for capturing and restraining semi-feral livestock.

  6. dogs at a glance - Kids | Britannica Kids | Homework Help

    Dogs are some of the most popular animals in the world. Many people keep them as pets. But dogs also help people do certain jobs. Dogs come in different sizes, shapes, and…

  7. Pug | Lifespan, Size & Health | Britannica

    Nov 19, 2025 · Pug, breed of toy dog that probably originated in China and was introduced to England near the end of the 17th century by Dutch traders. The Pug has a short muzzle and a …

  8. Dogs & the Canine Family Portal | Britannica

    The dog is one of the two most ubiquitous and most popular domestic animals in the world (the cat is the other). For more than 12,000 years it has lived with humans as a hunting companion, …

  9. Bernese Mountain Dog | Lifespan, Size, Weight & Temperament

    Nov 14, 2025 · Bernese Mountain Dog, breed of working dog taken to Switzerland more than 2,000 years ago by invading Romans. The breed was widely used to pull carts and to drive …

  10. Akita | Overview, Size, Temperament & Lifespan | Britannica

    Dec 6, 2025 · It was employed as a hunting and fighting dog and is now trained for police and guard work. The Akita is a powerful muscular dog with a broad head, erect pointed ears (small …