I am not sure what your question is here. I think you are asking if a dog can have puppies with one of its baby's? If so then my answer is no. A mom and a son cannot have puppies, but a Dad and a daughter can. I would not recommend either one of them because there is too much inbreeding going on already. I would not breed your dogs unless they are AKC registered anyways. If they are not please take them to the vet and get them spayed or neutered before they have any more puppies!
species
A species!!!!!
Maybe, but I believe they can only mate with one dog at a time.
4 years old
Organisms of the same species can mate and produce offspring.
Baby Prarie Dogs
Any dog can mate with another breed of dog.
It usually doesn't happen but its possible if the female is laying down.
No. Because you CANT mate your dogs on Nintendogs. You can say that they are 'in love' but it is not possible for them to have puppies.
It's not recommended for this to occur as it will cause a lot of genetic problems as well as physical deformities in the offspring.
There could be several reasons why your female dog is refusing to mate. Some possible reasons include: she may not be in heat or ready to mate, she may not be interested in the male dog, she may be experiencing health issues, or she may be stressed or anxious. It is important to consult with a veterinarian to determine the underlying cause and address any potential concerns.
Please give more detail to your question. What do you mean by when a dog fights over mate. However a dog will fight over another dog until one dog is hurt or the mate chooses.