Study points to head dunking as rapid cooling tool for dogs

A randomized crossover study from the Penn Vet Working Dog Center found that trained, voluntary head dunking into room-temperature water rapidly lowered dogs’ core temperature after exercise-induced hyperthermia, outperforming neck ice packs, wet neck towels, and wet axillary towels in the first five minutes after exercise. The study, published in the Journal of the American Veterinary Medical Association in September 2024, followed 12 working dogs and found head dunking was the only method that prevented the typical post-exercise temperature rise. AVMA and Penn Vet have highlighted the technique as a practical field option for dogs that remain mentally appropriate and can pause panting. (pubmed.ncbi.nlm.nih.gov)

Why it matters: For veterinary professionals, the findings add evidence to a low-resource cooling method that may fit prehospital, sports medicine, working-dog, and event medicine settings where full-body immersion isn’t available. The authors tie the work to the established “cool first, transport second” approach for acute heat injury, while also stressing that this is not a substitute for more aggressive care in dogs with altered mentation or more severe heat illness. Cynthia Otto, DVM, PhD, said the technique’s value is its portability, speed, and ability to blunt the dangerous temperature spike that can occur after exercise stops. (pubmed.ncbi.nlm.nih.gov)

What to watch: Ongoing AKC Canine Health Foundation-backed work is evaluating additional water-based cooling strategies, water temperatures, safety, and real-world use, which could further refine field guidance for canine hyperthermia. (akcchf.org)