Yes, quite possible..but it is very bad for her and her puppies.
However old it is when it gets pregnant.
you shouldn't get a very old dog pregnant it is unhealthy for them
At least 3 years old
Yes. You can get pregnant no matter how old either one is.
Yes, a six year old dog is capable of getting pregnant.
If the 6 month one dog has tedticles and is sexually mature and neither if them are neutered, yes.
The male should be a few months old before mating and his testicles should have dropped
can a 15 year old male dog make puppies with my 2 year old dog
Any where from 18 months.
Yes she could be.