How can I effectively train my cat to walk on a harness?

To effectively train your cat to walk on a harness, start by getting your cat comfortable wearing the harness indoors. Gradually introduce the harness and reward your cat with treats for wearing it. Once your cat is comfortable, attach the leash and let your cat explore indoors. Slowly transition to outdoor walks in a safe and quiet area, using positive reinforcement to encourage walking on the harness. Be patient and consistent in your training to help your cat adjust to walking on a harness.