STUD STOPPER (Tan, Small) 7-10 lbs Is a Vet Recommended Safe Male Dog Birth Control Alternative. Non-surgical Non-chemical. STUD STOPPER Creates a Barrier Between the Male and Female. Maintain All Daily Activities Such As Urinating Even Simulating Mating! No More Separating Your Dogs. Great for the 1-2 Years Before Neutering. Highly Reduce Stress for You and Your Dogs. Please see STUD STOPPER (Short Stature Series) for shorter breeds ie: Shihtzu, Dachshund , etc. Please visit website for more information and videos.