Carol Sankey, Séverine Henry, Aleksandra Górecka-Bruzda, Marie-Annick Richard-Yris, Martine Hausberger

How do we bond to one another? While in some species, like humans, physical contact plays a role in the process of attachment, it has been suggested that tactile contact's value may greatly differ according to the species considered. Nevertheless, grooming is often considered as a pleasurable experience for domestic animals, even though scientific data is lacking. On another hand, food seems to be involved in the creation of most relationships in a variety of species.