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  2. Canine reproduction - Wikipedia

    en.wikipedia.org/wiki/Canine_reproduction

    Female cycle. The average length of the reproductive cycle for females is 2–4 weeks. Females reach sexual maturity (puberty) between 8 and 18 months of age. There is a tremendous variability in the maturation age between breeds, and even within a breed of dog. [5] 1.

  3. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    Pregnancy is the time during which one or more offspring develops inside a woman's uterus (womb). A multiple pregnancy involves more than one offspring, such as with twins. Pregnancy usually occurs by sexual intercourse, but can also occur through assisted reproductive technology procedures.

  4. 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 ...

  5. Dogs don't actually age 7 times faster than humans, new study ...

    www.aol.com/article/lifestyle/2019/11/19/dogs...

    Say you have a 4-year-old Labrador named Comet — with the new equation, Comet's real "dog age" would be slightly older than 53. The reason for the difference is actually pretty simple.

  6. Dog - Wikipedia

    en.wikipedia.org/wiki/Dog

    In the later stages of the dog's pregnancy, nesting behaviour may occur. Puppies are born with a protective fetal membrane that the mother usually removes shortly after birth. Dogs can have the maternal instincts to start grooming their puppies, consume their puppies' feces, and protect their puppies, likely due to their hormonal state.

  7. Labrador Retriever - Wikipedia

    en.wikipedia.org/wiki/Labrador_Retriever

    standard. Dog ( domestic dog) 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. It is among the most commonly kept dogs ...

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