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  1. The Labrador Retriever or simply Labrador is a British breed of retriever gun dog. It was developed in the United Kingdom from St. John's water dogs imported from the colony of Newfoundland (now a province of Canada ), and was named after the Labrador region of that colony.

  2. The smallpox vaccine is the first vaccine to have been developed against a contagious disease. In 1796, British physician Edward Jenner demonstrated that an infection with the relatively mild cowpox virus conferred immunity against the deadly smallpox virus.

  3. en.wikipedia.org › wiki › DogDog - Wikipedia

    They perform many roles for humans, such as hunting, herding, pulling loads, protection, assisting police and the military, companionship, therapy, and aiding disabled people. Over the millennia, dogs became uniquely adapted to human behavior, and the human–canine bond has been a topic of frequent study.

  4. standard. Dog ( domestic dog) The Chihuahua [a] (or Spanish: Chihuahueño) is a Mexican breed of toy dog. It is named for the Mexican state of Chihuahua and is among the smallest of all dog breeds. [3] It is usually kept as a companion animal or for showing .

  5. The German Shepherd,[a] also known in Britain as an Alsatian, is a German breed of working dog of medium to large size. The breed was developed by Max von Stephanitz using various traditional German herding dogs from 1899. It was originally bred as a herding dog, for herding sheep. It has since been used in many other types of work, including ...

  6. en.wikipedia.org › wiki › Shih_TzuShih Tzu - Wikipedia

    Wylie. hsi 1 -shih 1 ch'üan 3. The Shih Tzu ( UK: / ˌʃiːˈtsuː /, US: / ˈʃiːtsuː /; [1] Chinese: 西施犬; pinyin: Xī Shī quǎn literally " Hsi Shih dog") is a toy dog or pet dog breed originating from Tibet and believed to be bred from the Pekingese and the Lhasa Apso . They can adapt well to different situations.

  7. Selection of different dog breeds This list of dog breeds includes both extant and extinct dog breeds, varieties and types.A research article on dog genomics published in Science/AAAS defines modern dog breeds as "a recent invention defined by conformation to a physical ideal and purity of lineage". ...