Ancol Plastic Dog Muzzle is the perfect tool for keeping more aggressive dogs under control when out in public. The ancol plastic muzzle is easily adjustable is best suited to a dog wearing a low riding collar for a secure comfortable fit. The muzzle will appear different to the image shown to suit the intended size of the animal, so size 1 will be slimmer at the bridge of the nose so on. Size 6-7: Border Collie, Beagle, Springer Spaniel, Cocker Spaniel Standard Poodle