What's the right human age for a male Yorkie to begin breeding?

Your female is too young and you should not breed her yet. Dogs should not be bred until they are 2 years old because they are physically and mentally immature. Additionally, Yorkies have a few health concerns so both parents need to be screen before breeding. Any dog that is bred should be with the intention to contribute the best genetics to the breed. Not because they are nice dog, are pure bred or because they are cute. Here is a link about Yorkies and the conditions that require screening. Look at the care section under the Health tab: https://www.akc.org/dog-breeds/yorkshire-terrier/ Wait another year for the female and have both screened. I hope this helps and please feel free to post any additional questions.

Mating might be difficult for her as she will have to stand on 3 legs and support the weight of a male on top of her. There will not likely be any changes or hardships during the birthing process, but the extra weight of a pregnancy can be harder on her front leg to support. While 6 is not old for small breed dog it is getting towards the end of healthy breeding though. I would not likely breed her due to these circumstances and have her spayed to prevent any future infections and risk

On average, males become fertile after six months of age and reach full sexual maturity at 12 to 15 months. The aKC requires a male dog to be at least 12 months old before being used to breed registerable puppies.

Henry is still too young to mate. It’s recommended to wait until a male is at least 2 years years old to breed. Also, if there is a problem with pet over population, it is not recommended to add to the problem by breeding dogs who are not purebred and registered. If there are not enough homes for dogs, then adding more dogs is not the solution. Males will be fine not breeding ever. It will not affect their health but it is recommended to neuter dogs. Neutering dogs has many health benefits and decreases behavioral problems such as aggression and dominance issues. Henry is old enough to be neutered. I hope this helps and please feel free to post any additional questions.

Males can mate after 6 months of age. Females can be bred, ideally, after 2 years of age. Separating them during this upcoming heat cycle would be recommended if you are not prepared to breed dogs and have a litter of puppies. By her next cycle, both will be more than ready to breed and in the interim, you can gain knowledge regarding breeding and raising dogs.

It's not recommended to mate a male dog until he is at least two years of age. That's because large breed dogs can take up to 15 months to be sexually mature, and at two years of age, the dog will be fully mature both physically and emotionally. I would wait until Bruno is two years of age before mating him.

A small breed dog will generally come into heat around 6 months old but can be as late is 12 months old. You don't want to breed females until they are two years of age. Make sure to think hard before you breed her. Small breed dogs are more likely to need C-sections. Please feel free to post any additional questions.