Why do dogs guard their food?
Dogs guard food (and other things like toys, people, etc.) because their instinct is telling them they need to protect their resources in order to survive. Wild animals guard things to survive, and while your domestic house pet is far from wild, they still have the ability to be a guarder and especially to protect themselves.
Tips for feeding your protective dog:
Regardless of the reason, dealing with a food guarding dog can be very difficult, but you can make it simpler by knowing the right tricks and processes. The following are tips that will help you with your day-to-day routine of feeding your food protective dog. Then, you can get the help of a professional positive reinforcement dog trainer to help you with his behavior.
Never tease. There are, unfortunately, videos online showing people taking food from resource guarding dogs. This is like playing Russian roulette with your hand. Don’t do it. Teasing a dog that guards his food will just make it worse. And while you may get luckily if he doesn’t bite the first time, at some point he is going to snap.
Feed separate. Don’t have your food protector in the room with you while you get everything ready, especially if you have other dogs or animals. Instead, be in a different room or have him in his kennel. This way, he can’t start protecting the food and/or you from other animals or people in the house.