Final answer:
When a female hybrid werewolf breeds with a male hybrid werewolf, there is a 25% chance for each pup to be a purebred werewolf.
Step-by-step explanation:
In this case, a female hybrid werewolf (Ww) breeds with a hybrid male werewolf (Ww). Since both parents are hybrids, they both possess the dominant WW gene and the recessive ww gene. When they reproduce, each parent randomly passes on one of their alleles to each offspring. This means that there is a 25% chance for each pup to receive the WW allele from both parents and be purebred werewolves.