Dogs can only breed after their reproductive organs are fully developed after 12 months. The gestation period is 61-63 days. Usually dogs become sexually mature when they are about 8 months old, and then they will have estrus behavior. However, at this time, the dog’s reproductive organs are not fully developed, so mating and breeding are not allowed. You have to wait until the dog is 12 years old. Mating can only be carried out when the second estrus comes after three months.

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Dogs generally go into estrus twice a year, and the number of puppies produced by a female dog each time is also different. The average female dog can give birth to 3- 9. Usually the dog can handle it by himself when giving birth, but the owner should always be with him to prevent the death of the puppy due to the dog's inability to handle it.