Measurment Guide

Length:  from base of neck to base of tail.
Girth: broadest part of chest behind front legs 
                          Small         Medium     Large       X-Large
Length            9"- 12"          13"-16      17"-20"       21"-23"
Girth               10"-14 "        14"-18"     19"- 22"      23"-27"
Weight            4-12 lbs      12-20 lbs   20-30 lbs    30-40 lbs