Humping
It is common for dogs to hump and it is not really a dominance or sexual issue. They may hump objects, people, and animals if they are being playful. This behavior is not harmful, but we understand some people may feel uncomfortable with it. This habit can be pretty inconvenient.
Sniffing Butts
You might have thought, “Can you imagine humans greeting one another like that?” It was already mentioned that dogs have a far more superior sense of smell than we do. Butt-sniffing is how they get to know one another. Dogs can tell the temperament, gender, and diet of other dogs this way!