When can a male miniature pinscher get a female min pin pregnant?
Is there a certain age before they are ready?:confused:

Anytime after about 6 months. That is why it is wises to spay/neuter at 4-6 months. I hope you aren't thinking of breeding them when they are old enough. If you have to ask that question, I am sure you don't have the answer to a hundred other questions you need to know before doing any breeding. Take a look at https://www.askmehelpdesk.com/dogs/hare-lip-puppy-53787.html That is just one instance of the problems you can have if you breed dogs without carefully checking the lines they come from to see that they are free from such problems.

We have too many dogs with problems, both physical and behavioral, caused by people breeding them without doing enough research before hand. I see many problems caused by this both here and on other sites I answer questions. By the way, if you are looking at the money you can make selling puppies, the AKC will not accept registrations of any puppies if the parents are less than a year old. Those concerned with producing quality puppies never breed any dogs less than 2 years old. You can find more information on what it take to do responsible breeding at American Kennel Club - akc.org (http://www.akc.org). You can find thousands of dog likely to be killed for lack of homes at Petfinder.com: Adopt a pet and help an animal shelter rescue a puppy or kitten. (http://www.petfinders.org).

Outside of labman's response, a male dog an only get a female dog pregnant when she is in heat. A female goes into heat roughly every 6 months. Unless you're intending to breed, keep the dogs apart as soon as the male starts showing unusual interest in the female, or the female starts 'bleeding' (usually the first symptom is excessive licking of the area), for a total of about 5-6 weeks.

If you don't intend to breed your dogs, you should have them spayed/neutered as early as recommended by your vet. They'll live much more healthier and emotionally stable lives.

Labman has a lot of great reasons not to breed dogs irresponsibly. If you're interested in breeding dogs responsibly, Getting Started as a Responsible Breeder (http://www.akc.org/breeders/resp_breeding/Articles/breeder.cfm) has a great article about what it takes. It's a lot of work, costs a lot of money, and the only reason to do it is for undying love of improving the breed.