Puller Standard dog...
Recommended by experts-cynologists.
perfect for Labrador, Retriever, Pit Bull, Malinois, American Staffordshire Terrier, Doberman Pinscher, Cane Corso, German Shepherd and others.
3 exercises with PULLER for 20 min are equal to 5 km (3 miles) of intense running or 2 hour practicing at the dog training ground.