Research overview: allorubbing and shared scent among cats

When cats rub against each other, a behavior called allorubbing, they mingle their scents and may create a shared group odor. This overview surveys allorubbing and related allomarking behaviors, in which cats deposit and exchange facial and body scents to build a common chemical signature among companions. A shared scent is thought to help cats recognize members of their social group and to ease social cohesion. The survey relates these behaviors to the facial gland pheromones and to the role of scent in feline social identity. It discusses how a group odor might function in colonies and multi-cat households. Understanding allorubbing and allomarking reveals a cooperative side of feline chemical communication, in which scent is not only a territorial signal but a social glue. It illustrates how cats use the exchange and blending of odors to construct and maintain affiliative relationships through a shared chemical identity.