CUPET(TM) Pet Dog Products Innovative Accessory Anti-bite Dog Mouth Covers Pet Mouth Mask Duck-shaped Mask Muzzle Small Size: Suitable for mouth circumference of 10.5cm. Neck circumference 12-30cm. Mouth set of height 4.5cm. Weight 48 grams. Medium size: Suitable for mouth circumference of 15.5 cm. Neck circumference 14-34 cm. Mouth set of height 6cm. Prevent eat something: When we go out on the road highlights what must eat, the most annoying Prevent biting wounding: Wear mouth sets out to prevent unintentional injuries to passers-by dogs. Avoid a lot of unnecessary trouble. Prevent chaos licking wounds: dog injured after a drug-coated, spray the medicine, afraid of dogs lick up, wearing a muzzle to protect the dog, oh, oh prevent licking! Ensure good health soon