A compound leash for use with a bicycle as a person simultaneously rides the bicycle and runs the animal. Made by a dog lover and bicyclist, the leash allows the dog to range across an area extending from about 10 inches to about 3 feet laterally from one side of the bicycle and about 2 feet forward and and aft of its rear axle. The leash comprises a mast, a clamp and a flexible connector joining them together. Mounted on the bicycle frame below its rear axle, the connector terminates outwardly in the mast which extends upwardly therefrom. Secured to the mast distal from the connector is at least one strap attachable to the dog's collar or harness. With the connector so mounted below the rear axle, the force from a harsh sidewise pull on the mast by the animal tends to tip the bicycle away from him rather than tipping the bicycle on the animal.