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Dogs mate like other mammals. The male dog senses when the female is able to get pregnant/conceive (also known as "in season" or "in heat") and inserts his penis into her vagina. Sperm in the dog's semen is then released (ejaculated) and fertilizes the egg of the bitch (female dog). Gestation takes approximately 69 days or nine weeks. When the puppies are fully developed, the female gives birth to them one at a time through her birth canal and out the vaginal opening.

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14y ago

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