Actually, wolf parents pre-chew food for the pups and then regurgitate it. Dogs “kissing” us by licking is a left-over instinct. But who is top dog in this house? Why do you have to physically hold your dog down to get it to cease any behavior? It needs to be trained to learn the off command, sit, stay, etc. This is semi-seroius. While dogs have cleaner mouths than people generally, who knows (or perhaps we know all too well) where that dog’s tongue has been. Yuck!