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  2. Dog breeding - Wikipedia

    en.wikipedia.org/wiki/Dog_breeding

    Dog breeding is the practice of mating selected dogs with the intention of maintaining or producing specific qualities and characteristics. When dogs reproduce without such human intervention, their offspring's characteristics are determined by natural selection , while "dog breeding" refers specifically to the artificial selection of dogs, in ...

  3. Canine reproduction - Wikipedia

    en.wikipedia.org/wiki/Canine_reproduction

    In domestic dogs, sexual maturity occurs between the ages of 6 and 12 months for both males and females, although this can be delayed until up to two years of age for some large breeds. [2] Pregnancy is possible as soon as the first estrus cycle, but breeding is not recommended prior to the second cycle. [3]

  4. List of dog breeds - Wikipedia

    en.wikipedia.org/wiki/List_of_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".

  5. Whelping box - Wikipedia

    en.wikipedia.org/wiki/Whelping_box

    A female dog in her whelping box. Whelping Box with Extension Wall. A whelping box/den, also known as a nesting box, whelping den or whelping pen, is designed to protect puppies during birth (whelping) and early life by keeping them safely contained, protected from cold, and safe from the danger of crushing or smothering by the mother.

  6. List of most popular dog breeds in the United States

    en.wikipedia.org/wiki/List_of_most_popular_dog...

    Malteses were the most popular dog from 1936 all the way through to 1952, when the Beagle became the number one dog until 1959. Poodles would become the most popular breed for the longest, reigning from 1960 for the next twenty-two years until 1982, when the American Maltese once again took over until 1990.

  7. Domestication of the dog - Wikipedia

    en.wikipedia.org/wiki/Domestication_of_the_dog

    A study of dog remains indicates that these were selectively bred to be either as sled dogs or as hunting dogs, which implies that a sled dog standard and a hunting dog standard existed at that time. The optimal maximum size for a sled dog is 20–25 kg based on thermo-regulation, and the ancient sled dogs were between 16 and 25 kg.

  8. Olde English Bulldogge - Wikipedia

    en.wikipedia.org/wiki/Olde_English_Bulldogge

    The Olde English Bulldogge is an American dog breed, recognized by the United Kennel Club (UKC) in January 2014. The breed is listed in the UKC Guardian Dog Group. [1] Five years prior to UKC recognition, the breed was registered by the former Canine Developmental, Health and Performance Registry (CDHPR), a privately held business located in Kalamazoo, Michigan.

  9. Whippet - Wikipedia

    en.wikipedia.org/wiki/Whippet

    The name "Whippet" is derived from an early seventeenth-century term, now obsolete, meaning "to move briskly." [14]In the Victorian era, English writers began describing an emerging modern breed of Whippet, also known as the snap-dog, a term derived from their tendency to readily 'snap up' nearby prey due to their naturally high prey drive. [15]

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