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  2. Canine reproduction - Wikipedia

    en.wikipedia.org/wiki/Canine_reproduction

    During proestrus and estrus, females may have a clear, blood tinged, or bloody discharge. Dogs during these stages are often informally referred to as being in heat. The length of these cycles varies greatly among breeds and even between individuals of the same breed. Proestrus and estrus can last anywhere from 5 days to 21 days. [5] 3.

  3. Estrous cycle - Wikipedia

    en.wikipedia.org/wiki/Estrous_cycle

    A female dog is usually diestrous (goes into heat typically twice per year), although some breeds typically have one or three cycles per year. The proestrus is relatively long at 5 to 9 days, while the estrus may last 4 to 13 days, with a diestrus of 60 days followed by about 90 to 150 days of anestrus.

  4. Dog behavior - Wikipedia

    en.wikipedia.org/wiki/Dog_behavior

    Female dogs have their first estrus ("heat") at 6 to 12 months-of-age; smaller dogs tend to come into heat earlier whereas larger dogs take longer to mature. Female dogs have an estrous cycle that is nonseasonal and monestrus, i.e. there is only one estrus per estrous cycle.

  5. Rut (mammalian reproduction) - Wikipedia

    en.wikipedia.org/wiki/Rut_(mammalian_reproduction)

    Rut (mammalian reproduction) The rut (from the Latin rugire, meaning "to roar") is the mating season of certain mammals, which includes ruminants such as deer, sheep, camels, goats, pronghorns, bison, giraffes and antelopes, and extends to others such as skunks and elephants. The rut is characterized in males by an increase in testosterone ...

  6. Dog - Wikipedia

    en.wikipedia.org/wiki/Dog

    The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the domestic dog, it was domesticated from an extinct population of wolves during the Late Pleistocene, over 14,000 years ago by hunter-gatherers, prior to the development of agriculture. The dog was the first species to be domesticated by ...

  7. Bulldog - Wikipedia

    en.wikipedia.org/wiki/Bulldog

    On 4 April 1873, The Kennel Club was founded, the first dog breeding club dealing with the registration of purebred dogs and dog breeds. [11] [non-primary source needed] Bulldogs were included in the first volume of the Kennel Club Stud Book, which was presented at the Birmingham Show on 1 December 1874. The first English Bulldog entered into ...

  8. Dingo - Wikipedia

    en.wikipedia.org/wiki/Dingo

    The dingo (either included in the species Canis familiaris, or considered one of the following independent taxa: Canis familiaris dingo, Canis dingo, or Canis lupus dingo) is an ancient (basal) lineage of dog [ 5 ][ 6 ] found in Australia. Its taxonomic classification is debated as indicated by the variety of scientific names presently applied ...

  9. Vizsla - Wikipedia

    en.wikipedia.org/wiki/Vizsla

    A vizsla will begin puberty on average 8–10 months after birth. Though for vizslas and most other breeds, they should not be bred during their first heat; instead, the second or third heat cycle is when they should be bred if desired. But even these measures can vary depending on the dogs mental and physical maturity. [28]

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