How to train your cat to enjoy a harness. Start young if you can but if not, associate the harness with going outdoors. Jiggle harness & pick up your cat & go in your porch or outside. Eventually put harness on before going outdoors. I added a weighted retractable dog leash & let jasper pull/Run around my 1acre land under my supervision. Eventually your cat will be happy to wear a harness, a leash, and freely walk around outdoors with you! #cat #catwalking #catharness