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  2. Canine reproduction - Wikipedia

    en.wikipedia.org/wiki/Canine_reproduction

    Diestrus lasts approximately 56 to 60 days in a pregnant female, and 60 to 100 days in a non-pregnant female. During both of these periods, progesterone levels are high. Because the hormonal profile of a pregnant female and a female in diestrus are the same, sometimes a non-pregnant female will go through a period of pseudopregnancy.

  3. 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 ...

  4. 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.

  5. Pregnant Dog Unable to Walk Delivers 11 Adorable Puppies - AOL

    www.aol.com/pregnant-dog-unable-walk-delivers...

    Spaying your female pet lessens her risk of certain health problems like uterine infections and breast cancer, while neutering your male pet reduces his chances of developing testicular cancer and ...

  6. Woman adopts pregnant dog on euthanasia list that gives birth ...

    www.aol.com/lifestyle/2017-06-29-woman-adopts...

    The momma dog went on to have another four puppies within 57 minutes, according to Holland. "She took a little break, had puppy #6, another break and then puppy #7 at 12:33 a.m.," Holland wrote on ...

  7. This TikToker shared the moment his dog realized his ... - AOL

    www.aol.com/lifestyle/tiktoker-shared-moment-dog...

    This TikToker shared the moment his dog realized his wife was pregnant, and it’s so moving!. Ryan (@maxpotentialdogtraining) shared a heartwarming video of the moment his dog, Nova, realized ...

  8. Non-surgical fertility control for dogs and cats - Wikipedia

    en.wikipedia.org/wiki/Non-surgical_fertility...

    As of 2013, an estimated 75% of 700 million dogs worldwide were free to roam and reproduce, resulting in overpopulation, high mortality rates and poor health. [1] The main management approach is surgical sterilization, i.e. the removal of testes or ovaries, often performed through trap-neuter-return strategies. [2]

  9. Pseudopregnancy - Wikipedia

    en.wikipedia.org/wiki/Pseudopregnancy

    Dogs become pseudopregnant following an estrus phase in which the female dog is not bred, or in which she is bred by an infertile male. Most species require signals from an embryo (such as IFN-τ in ruminants) to alert the female's body of a pregnancy. This maternal recognition of pregnancy will cause persistence of the corpus luteum and the ...