American Academy of Pain Management – Human (AAPM)
American Academy of Pain Medicine – Physicians (AAPM)
American College of Veterinary Anesthesiologists (ACVA)
American Society of Regional Anesthesia & Pain Medicine (ASRA)
American Veterinary Chiropractic Association (AVCA)
Association of Veterinary Anaesthetists – Europe (ASA)
European College of Veterinary Anaesthesia and Analgesia (ECVAA)
International Association for the Study of Pain (IASP)
International Veterinary Academy of Pain Managment (IVAPM)
International Veterinary Acupuncture Society (IVAS)
Veterinary Anesthesia & Analgesia Support Group (VASG)
World Institute of Pain (WIP)

Regional Anesthesia and Pain Medicine
The official publication of the ASRA, publishing peer-reviewed scientific and clinical studies to advance the understanding and clinical application of regional techniques for surgical anesthesia and postoperative analgesia.

Veterinary Anaesthesia and Analgesia
The official journal of the Association of Veterinary Anaesthetists, American College of Veterinary Anesthesiologists; European College of Veterinary Anaesthesia; and the International Veterinary Academy of Pain Management

The ACVA training standards for residency programs can be found here. Not all U.S. veterinary colleges offer anesthesia residency programs and those listed below may not offer their program in a given year. Programs are normally applied to through the Veterinary Internship & Residency Matching Program (VIRMP), with the exception of the U.C. Davis program which requires direct application.

Cornell University
North Carolina State University
University of California, Davis
University of Georgia, Athens
University of Minnesota
University of Ohio
University of Pennsylvania
University of Tennessee
Tufts Cummings School of Veterinary Medicine

American Academy of Veterinary Acupuncture (AAVA)
Canine Rehabilitation Gateway – University of Tennessee
Canine Rehabilitation Institute
Jonkar Veterinary Systems – How to recognize pain
VIN – Anesthesia & Analgesia Specialty Center (Requires member log-in)
VIN – Pain Management (Requires member log-in)
Virtual Anesthesia Textbook

Wall and Melzack's Textbook of Pain
Handbook of Veterinary Pain Management (Gaynor & Muir) 2008
Pain Management for the Small Animal Practitioner (Tranquilli, Grimm and Lamont) 2004
Anesthesia and Analgesia in Laboratory Animals (Fish et al.) 2008
Pain Management in Animals (Flecknell and Waterman-Pearson) 2000
Animal Pain (Hellebrekkers) 2000
Small Animal Pain Management (Carroll) 1998
Management of Pain (Mathews) Vet Clinics 2000
Pain Management and Anesthesia (Mama) Vet Clinics 2002
Analgesia and Anesthesia (Heard) Vet Clinics 2001