05/22/2026
If a dog has escalating aggression, handling sensitivity, car anxiety, noise sensitivity, reactivity, sudden behavioural change, or “unpredictable” behaviour, and your vet refuses to even consider a pain trial, you should seriously consider seeking a second opinion. (GI discomfort excluded)
Modern veterinary behavioural medicine is very clear: pain and behaviour are linked. This is no longer a debate. Some of the most important behavioural and pain papers in veterinary medicine over have repeatedly shown that chronic pain is commonly missed in behaviour cases.
A NORMAL PHYSICAL EXAM CANNOT RULE OUT PAIN. (especially if your dog needs a sedative or anti anxiety to even be examined).
In fact, behavioural change is often the first sign something is wrong. Pain trials are not “random medication”. They are recognised diagnostic tools used by progressive, up-to-date veterinarians, veterinary behaviourists, neurologists, rehabilitation vets, and pain specialists worldwide. Some discomfort, especially neuropathic pain or low-grade musculoskeletal pain, cannot be definitively diagnosed through palpation or even imaging. The AAHA/AAFP and WSAVA pain guidelines also explicitly recognise behavioural change as a major indicator of pain. A dog becoming more compliant after correction, stricter handling, or punishment does not prove the dog was never uncomfortable.
The best vets already know this and they understand that suppressing behaviour is not the same thing as solving it.
There are many outstanding veterinarians who are highly educated, care and who collaborate with other professionals and who take owner concerns seriously.
Suggested Further Reading
Mills DS et al. (2020). Pain and Problem Behavior in Cats and Dogs. Animals.
Epstein ME et al. (2015). AAHA/AAFP Pain Management Guidelines for Dogs and Cats.
Mathews K et al. (2014). WSAVA Guidelines for Recognition, Assessment and Treatment of Pain.
Lascelles BDX publications on osteoarthritis and chronic pain in companion animals.
Landsberg G, Hunthausen W, Ackerman L. Behavior Problems of the Dog and Cat.
Reid J et al. publications on the Glasgow Composite Pain Scale.