Yes, it is, though in some societies, it is nose rubbing rather than kissing.
Human behavior is a combination of instinctive and learned responses.
Puppies lick you as a mere sign of affection. It is basically a dogs way of kissing somebody.
Instinctive communication is related to natural human instinct, behavior, action, or response. It is a message or meaning that is communicated to another that is true for all human beings. Every human squints when coming from a dark room into bright sunlight. Every human flinches when somone snaps their fingers in their face. Every human pulls their hand from a hot burner or heat source and make some sort of sound to express their pain. Instinctive communication at the things every human communicates to another. But... my question is... can body language be instinctive?
Behaviorism
lifestyle changes
Hard Kissing: Is intense and fast, such as french kissing or the specific kind when you move excitedly. Soft Kissing: Is a shy, slow moving, living the moment feeling. Such as the "movies/human kissing".
There's no evidence than non-human animals find our species particularly erotic, despite the affection small dogs sometimes display for human legs. Most animals mate in certain seasons and the stimulating sense is smell, not sight.
Snakes do not sting, they bite. A snake would bite a human if it felt threatened by that human.Sometimes it is actually an instinctive thing.
lifestyle changes
Beowulf had several examples of human affection. Several scenes of sexual intercourse appeared in the movie. The transformation of the human into a wolf and then tearing at the flesh of his mate was also an example of lust.
Yes, kittens often lick as a sign of affection, grooming, or to show trust and bond with their human companions.
The 36-foot human skeleton on display at the museum is 36 feet tall.