Can horses who work with humans be considered professionals? This article aims to show how recognizing and taking into account the work of the horse contributes to the construction of a professional group. Drawing on the sociology of professional groups, of activity, and of work carried out by animals, I analyze the representations of respondents working in the Republican Guard and the equestrian brigade of the city of Tours, adopting a discursive approach and using textometric processing. In human–horse working relationships, the recognition of the work of horses and the central role played by affectivity make the activity an “energy” that produces meaning and values, as well as creating a professional identity that goes beyond the realm of the institution.