Stop taking things away
Reaching in to prove you can, or repeatedly removing the bowl, teaches the dog that your approach predicts loss. The dog's response escalates from stiffening to growling to biting.
Change the prediction
Approach at a distance the dog is comfortable with and add something better — walk past and drop a piece of meat near the bowl, then leave. Over time your approach predicts a bonus, not a loss. Close that distance slowly and only as the dog's body language stays loose.
Manage in the meantime
Feed behind a closed door. Do not hand out high-value chews in shared spaces. Teach a trade and a reliable drop with low-value items long before you need it with a real prize.
Get hands-on help
Growling near children, guarding a person, or any bite history should be assessed in person. This is what our behavior modification sessions are for — never a do-it-yourself project.
Every dog is different. If you want a recommendation for your dog specifically, tell us what's going on and we'll point you to the right program — we're at 8618 Ridgefield Rd, Crystal Lake, IL.