1.Measure down the center back of your dog from just below the collar to just above the base of the tail.
2.Measure around your dog's neck just below the collar.
3.Measure between the front legs at the top of the legs (where the front legs meet the body).
4.Measure at center front, straight down from neck to top of front legs.
5.Measure around the widest part, generally just behind the front legs.