Martini growled at me once when I put my hand near his food bowl while he was eating. I grabbed a small treat, put my hand down into the bowl and put the treat in front of him. Immediately he made the connection and he thought "I WANT her to touch my food bowl!" I never had a problem with him again. I can put my hand in his bowl, move his bowl, take his bowl away and he steps aside and waits for me to finish what I'm doing. And this goes for his toys and chewies too. If he's really into chewing on something, he may not drop it and give it to me, but I can get it from him without a fight. Usually if he's growling over a toy I'm trying to take away, it's because he's trying to play.