If you lick a dogs mouth just after it ate, it will throw up.
This is a reaction of when dogs were wild, and they had to bring food back to the den. They would gorge themselves, and when returning, the puppys would lick the face, and the pack would feed the puppys.
I've actually never seen this behavior in domestic dogs, altho I know one breeder who said her female did this. I kind of think it's either a behavior we have bred out of them (for the most part) or it's not necessesary these days.
susie
I love my dog but you will never get me to lick it's mouth at any time for any reason! I'll just have to take your word for it.