Behavior Starts in the Body
A dog's whole sense of safety runs on incoming information. Eyes, ears, nose, skin, joints. Take away any one of those and the dog is not just missing details, they are missing the ability to predict what happens next. Prediction is where calm actually comes from. A dog who can tell what is coming can let their guard down. A dog who cannot, cannot.
So when the body stops giving good information, the nervous system has to guess. And a guessing nervous system guesses dangerous.
This is not a small or rare thing. A 2020 review in the journal Animals, led by Daniel Mills, looked at pain in behavior cases. Across the referral caseloads of the authors, the share of behavior cases with pain involved ran from 28 percent to 82 percent. Sit with the low end of that. Even at 28 percent, more than one in four dogs sent to a behavior professional is carrying something physical.
Which means not looking is not neutral. It means a predictable share of owners pay for months of training that was never going to work, while the dog gets called stubborn for telling the truth.