Before engaging in any biking activities with your dog, ensure the bike's brakes, tires, and chain are in good working order. Check the integrity of any attachments like a bike leash or bikejoring equipment for wear or damage. For your dog, verify that the harness fits comfortably and securely, and inspect any protective gear like boots or paw wax for appropriate fit and condition. Confirm that all equipment is suitable for the activity's demands to prevent injury to both you and your dog.