This is a subjective question that really depends on the breed. Large breeds need to be at least, 3 years old while smaller breeds should be around 2 years old. The age is a serious consideration because the younger the animal the less developed their body systems and bones are. Allowing a 6 or 8 month old puppy breed is the equivalent of an 10 or 11 year old girl having a baby.
Then comes the question of why do you want to breed your female? While I was a breeder for many years I went to a lot of trouble to educate my buyers on how to take care of the puppy they were getting. I also made sure all the puppies in each litter had a home to go to or they stayed with me regardless how many I had at the time. In 22 years no puppy produced from my kennel ever went into an animal shelter.
This is a serious consideration as well, since the average litter for small breeds is 6 and for large breeds is 10. Therefore, breeding because you want "a puppy" from your girl, what are you going to do with the other 5 or 9? Do not depend on friends and neighbors saying they will take one because I can tell you from experience that even when someone has a hefty deposit down on that puppy they may or may not take the dog when the time comes.
Allowing a female to breed can bring up all kinds of deadly health problems in the future that you may or may not want to deal with, from pyrometria (uterine infection) to Breast cancer. All of which can be prevented by spaying your girl before that first heat cycle around 7 to 9 months of age.
Yes. All dogs can breed after about 1 year Yes. All dogs can breed after about 1 year
No, that is a good age to breed dogs.
whe they are about 1 year at the youngest
I believe the first breed of dogs is the wolf. to be exact im not sure if there were any other breeds or ancestors before that.
Female dogs "go into heat" randomly, about twice a year. You should not breed her until she is about 3 years old, and you should have her checked out by a vet before you start.
They can breed, however you should wait until they are at least 2 years old so they have developed.
Dogs are usually full grown around a year old
Technically, yes. But that would be very hard for the dog.
it depends on the breed, smaller dogs tend to have longer life spans, but there are some exeptions. It really depends on the breed and how well the animal is taken care of.
For any dog, you should wait at least for its second heat. Although most high quality dog breeders will wait until until the dog is in its second year so that the dogs general health can be properly evaluated to ensure you are breeding to improve the breed
No, not necessarily true, but mixed breed dogs do live longer than pure bred dogs
Depending on the breed most dogs live about 10 to 20 years if they are kept in good health.