Do hunter gatherers kiss near-universally? I think that would answer the question of whether it is nature or nurture. I’m allowing for it to be suppressed at t

Do hunter gatherers kiss near-universally? I think that would answer the question of whether it is nature or nurture. I’m allowing for it to be suppressed at times by culture, but I would expect the instinctive behavior to win the majority of the time unless the instinctive behavior is somehow harmful in an environment different from the organism’s classic environment.