A tethering system is used with a bicycle and a pet. The system has: a flexible tube having a proximal end and a distal end; the proximal end of the flexible tube having a plate connector having a bike attachment system and a removable connection with the flexible tube, the connector configured to attach to a position on a two-wheel bicycle within 15 cm of a rear axle on the two-wheel bicycle; and the distal end of the flexible tube having a connection system for a leash.