Children don't need their parents to be their friends. That's what they have peers for. A family is one place where a hierarchy is not only appropriate, it's ideal, as children need guidance, limits, and consequences as well as love, care and nurturing.

Be prepared to have your threshold for filth increase. As your pup's interest in used Kleenexes, rotting corpses and somebody's previous night's regret grow, so does your willingness to shove your hand in their mouth to grab their sidewalk afternoon delight; even if it happens to be a used condom.