Our four year old lab/vizsla mix has been grumbling at our toddler. I would not call it a full on growl, he is not baring teeth, but he is clearly upset that our DD is near him. He was great with her for a long time and then she went through a hitting/rough petting phase. We worked quickly to teach DD that we need to be gentle with the dogs and luckily she picked it up quickly and is no longer rough with them. I know DD's behavior scared him, who would blame him, so I understand why he was grumbling at her but how do I get him to trust her again and know that she is no longer going to hurt him while at the same time teaching him that it is not ok for him to growl at her? Any advice? Thanks!