Hello all, In one of my classes I have a chow/shep mix who is starting to show guarding behavior ie growling at strange people that approach him too close. He is very people shy as chows are noted for being, he does not like strange people to pet him and if they push his comfort zone too much he will growl but he is also starting to growl at other times. I have been working with him for about 6 weeks now so I am not a stranger so to speak but he has shown teeth at me this last week and I was standing on the other side of the room. Now I was purposely looking right at him to see how long it would take to trigger him as this behavior is becoming more frequent. I have done some research on chows so I am becoming a bit more familiar with the breed. He is a very sensitive dog though, he is not big on loud sounds etc. He plays with other dogs fine and at the dog park he will go lean on the owners of the dogs he is best friends with but no one else. I want them to be able to channel the guarding behavior so they are not always having to worry about when the guarding behavior will manifest so I told them to check out some positive reinforcement only schutzhund training. Do you guys think this is a good idea? He is about 8 months old now and so I want them to get a handle on this early before he matures. Any other suggestions. I have already had them have strangers give him treats thinking it was just timidity but he will take the treat and shy away and now that the guarding behavior is manifesting I do not want to force him to have people try to pet him as when he gets pushed too hard he really growls and wants people to back off. He has growled a couple of times in the store at people just walking by his owners. He has not lunged yet or tried to bite but I want to give them tools. He has never been abused. Thanks for the input.