State laws and AVMA's Principles of Veterinary Medical Ethics require a Veterinarian-Client-Patient Relationship (VCPR) for a veterinarian to diagnose, prescribe medication or otherwise treat an animal.

AVMA, American Animal Hospital Association (AAHA), Veterinary Management Groups (VMG), VetPartners and the Veterinary Hospital Manager’s Association (VHMA)

Federation of European Companion Animal Veterinary Associations (FECAVA) and WSAVA

AVMA guide to foster communication and a positive partnership between staff and pet owners.