I kiss the kitties on their heads, their tails, their feet, their closed eyes (a personal favorite), on their cheeks, their ears (I even nibble), their sides, their tummies and YES their lips!
I kiss the mousies on their nose or head (who could find their little lips?)
I allow the dogs I work with lick my face but I usually don't go around kissing them on the lips.......after all, we are not family.