Hi am after some advice from you lovely experienced dog owners! Our gorgeous lab puppy who is four months old had suddenly started growling if approached when she is eating. She is calm and good natured usually but out of the blue last week growled at my little boy who is three when he stood next to her food bowl. At first I thought it was just the bowl scraping along the floor so decided to do nothing and keep an eye on it. She then growled at me when I tried to retrieve a corn on the cob which baby had dropped from his high chair as she could have choked. I said no firmly and put her outside after removing the corn. This morning she growled again when my little boy stood next to her after he put her food bowl down for her. What if anything can I do about it and am I right to be concerned? I do get the kids to leave her alone and give her space but am worried this behaviour will escalate to toys etc... Thanks!