Imaging studies find degenerative joint changes in a large share of older cats, yet overt limping is rare; reduced jumping and altered routines tell the story.

Daily clues include skipping high perches, hesitating at the litter box, matted back fur from less grooming, and deeper sleep with harder waking.

Environment fixes work: steps or ramps to favorite heights, low-entry boxes, thick warm bedding, and weight control as the core load reducer.

Suspected joint pain deserves a vet assessment, where prescription pain management is available; never give human arthritis drugs, which can be lethal to cats.