Collar not included. Dog bandana available in sizes S-XL. Small neck size 8-14 inches (Yorkies, mini Dachshund, mini Schnauzer, Chihuahua) Medium neck size 14-20” (shown on the 25 lb. mini Goldendoodle, Beagle, Cocker Spaniel, Bulldog) Large neck size 15-26” (Boxer, Labrador Retriever, Dalmatian, German Shepherd) X-Large neck size 16-28” (St. https://www.etsy.com/listing/1464720686/tie-dye-smiley-face-dog-bandana-with