Native Pup features unique dog collar designs to make your pup look beautiful! Collar Features Easily adjusted to fit most dog breeds Colorful repeating design Durable polyester Metal D-Ring and adjuster No ugly branding Sizing To accurately measure your dog's neck size, use a cloth measuring tape or string and measure around your dog's neck. We suggest adding 2 additional inches to your dog's neck size to find the perfect collar size. Please see the size chart in the pictures for more information. General Breed Sizing Guidelines Small 11-15 inches: Chihuahua, Terriers, Shih Tzu Medium 14-20 inches: Beagle, Cocker Spaniel