SIZING:*********************************************************
CAT: 3/8" width:: 8-12 inches********************************
X-SMALL DOG: 3/8" width:: 6-10 inches**********************
SMALL: 1/2" width:: 8-12 inches********************************
MEDIUM: 3/4" width:: 13-17 inches**************************
LARGE: 1" width:: 15-24 inches********************************
X-LARGE: 1" width:: 17-26 inches**************************