Three, I love your answer. Thumbs up!
Aryll, before you think about breeding your dog, please take a few minutes to stop by your local animal shelter. The animals there do not have homes/families to love and care for them. It is almost a certainty that if you breed your dog, and sell her puppies, you will be contributing to the homeless animal population in the world. I urge you not to take this lightly. I encourage you to enjoy your dog's company/companionship and allow her to live a long and healthy life by having her fixed sooner rather than later.
First think about the over one million dogs euthanized each year because they have no homes. Then take into account you have no way of knowing if 'your puppies' will be treated as well as they deserve. Add to that, the possible extra costs for vet visits and cesarean births, and the fact that you don't know whether your dog will be a good mother.
And last but not least, what if you don't sell all the pups? You'll keep them, right?
I'm not being mean, just answering you truthfully.
If you don't have the desire to sacrifice a lot of your time and effort, then just spay your dogs and enjoy them as companions.
Breeding dos is not supposed to be taken lightly. There is a lot of money spent on veterenarians, dog food, immunization, the time spent on cleaning their quarters, time caring for the puppies afte they are 6 weeks. They start pooping and you need to start potty training. It's like raising babies. So if you are not ready to make a lot of sacrifices financially , your efforts and your time, then don't do it. People don't realize that it entails a lot of patience, money time and effort to do this. This undertaking is not for everybody.
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Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them