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2 Answers

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However, this can vary a lot, depending on the breed and dog.

Some dogs, usually the smaller breeds, can have their first heat cycle as early as four months of age.

On the other hand, large and giant breeds can take up to two years before they reach sexual maturity.

–1 vote
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  • Dogs should breed once they have reached full sexual maturity which is a little less than one year old. The age in which to breed a dog, whether male or female, depends on the breed of the dog. Smaller breeds tend to sexually mature earlier and can be bred at 6 months. Whereas, larger breeds should wait until 18 months.

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