My sister found a puppy that belonged to her neighbors. the mom and dad are suppose to be pure bred pits. the puppy was malnourished and abused so she kept it and gave it to me. How do i find out that its pure bred and get the puppy registered? he is still very young i just couldnt give it back to the same people that were treating it bad. i have a registered female who is pretending to be the pups mom even though she hasnt had pups herself. so i need to get this doen & get the pup to the vet but i also dont even know how old the pup is but he is very little.