Hello...we have a situation that I wonder if we should correct. Our tiny toy poodle, 4 1/2lb, likes to keep a piece of dog kibble right beside her when she lies around the house. She will pick it up and take it with her when she moves. She has never been agressive toward any human coming near, but if either of our other 2 dogs, a Standard Poodle and a Bichon Frise, comes near she will growl and sometimes even snap. Neither of them are interested in her piece of kibble, but if they even come close she is agressive. We have always thought it was funny, seeing as the Standard outweighs her 10x, but I wonder if this should be discouraged, and how should we do it? If we remove the food, she just goes and gets another.