I posted this in the 'agressive dog' topic... this worked for my basset hound Daisy, who is one now. She used to bite me and my other family members and my mom said if she bit anyone outside the family we would have to give her up. So we got Daisy her own 'personal trainer' who came up with the idea that stopped her nipping and biting. The penny bottle! This is simply a plastic soda bottle filled with 15 pennies. Whenever Daisy bit, we would slam the bottle hard on our hands or on the floor. She hated the noise and would stop immediately. It worked quickly as Daisy learned that the consequence of biting was that awful noise. The only thing you have to remember is to keep your dog from thinking the penny bottle is a toy. My friend tried this with her agressive dog but left it lying around too much and her dog started playing with it and thinks of it as a toy. Needless to say, she still bites. If you use the penny bottle consistently, it will work! My Daisy is an angel now and doesn't bite! Good luck with your dog.