It’s a fact that dogs need exercise. NO EXERCISE can cause “fracture disease” which is stiffness of a rather severe nature, caused NORMALLY by immobilization of a joint in a cast. In this dog’s case, it had NO exercise and the bones and joints featured a stiffness and arthritis serious enough to be called disabling. And all they had to do was encourage it to exercise.
A study found that exercise was as good as an anti-inflammatory for arthritis – but then, they also found that exercise AND an anti-inflammatory was twice as good as either alone.
“Use it or Lose It” applies.