BOULDER, Colo. — Ruffian the champion show cat reclined on a fur pillow wearing tiny protective goggles to shield his eyes from the laser therapy being used to treat his inflamed joints.

Canada lynx cats Chuckie and P’uch’ub; bobcats Digger, Willie Bob, Ruffian and Tank; and African servals Nile, Percival, Nefertiti, Blondie and Shasta. Caretakers first noticed the cats ...

A few years ago, the Maine Coon cat was diagnosed with medial humeral epicondylitis, a condition in cats in which mineral deposits develop around the elbow joints and can cause pain. Ruffian’s ...