6 Types of Dog Collars and Their Differences (with Pictures) | Hepper

Solid Iron Dog Collar Metal Chain Adjustable Large Dog Pet Training Collar

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Soft Genuine Leather Dog Collar for Medium Large Dogs, Heavy Duty Large D og Leather Collar with Durable Metal Buckle for Daily Walking or Training, Black, Neck fit 18-25"

PET620-1 100% Waterproof & Rechargeable Dog Shock Collar 660 ft Remote Dog Training Collar with Beep Vibrating Electric Shock Collar for Dogs (10-100lbs)