I have a 5 month old cbr male. The dog is great with the kids and has impressed me so far. The problem is when he is fed if you touch him he growls and I'm not talking a playful growl I'm talking showing teeth I want to kill growl. I just had my hand under his chest petting him and he snapped and bit me. I can feed him from my hand and he's fine. Not real sure what to do any tips would be great.