The United Kennel Club says that for a pit bull to get a purple ribbon, all of its ancestors from the last three generations must have been registered with the UKC. To do this, the parents, grandparents, and great-grandparents’ family trees must be checked.
The American Staffordshire terrier is what the United Kennel Club says the pit bull is. But any kind of dog can be labelled with a purple ribbon. A dog with this pedigree has “PR,” then a comma, at the beginning of its name.
If both of a dog’s parents have purple ribbons, the dog’s offspring has a full “Seven Generation” pedigree. To do this, you need to know the family tree of 254 ancestors.