"Alittle background info: A year ago I rescued a female ferret from a ferret breeding shelter in PA. She was born with a deformity (missing a toe) and was to be destroyed. Since I brought her home, she gets along great with my older female ferret (one year age difference). The only problem is that the younger one bites, mainly when playing rough. Though one mishap, I've discovered that both my girls are absolutely 'ga-ga' when it comes to peanut butter. Alittle bit here and there as a treat isn't harmful. Anyways, I've started using peanut butter treats as a way of correcting this biting behavior. So far, I've seen a major improvement, but we still got a ways to go."