Rubbing is a normal way that cats mark their territory by marking their scent on different objects, and they also use it to communicate with other cats. Cats will often times rub up against their favorite people, objects,, hallways, etc, as a way of claiming their territory. Cats pass on glandular secretions that humans cannot smell but that other animals or cats can. They rub against their things by using their chin, forehead, and body, and this is their way of letting other cats know that this "object, or person" is theirs and to not interfere. Unfortunately when cats do this, they let off dried Felis domesticus 1 which is then automatically shed off into the environment.
|Allergic! Cat Grooming & Saliva Cat rubbing|