My sister's little mixed breed has never had the chance to get that raunchy, but sometimes she (the dog, that is) gets a little too affectionate. I was reading some, conversing some, and suddenly the dogs tongue was in my mouth further than any human female's has ever been. My sis trotted out the old line about dogs having cleaner mouths than humans do. Well, yeah, maybe, if the humans you know like to nibble shit and roadkill.
Having said that, I've always liked dogs. For too many years it just hasn't made sense (mainly for the dog's sake) for us to keep one ourselves.