Use a soft sided measuring tape to measure comfortably around your dog’s neck in the collar position. Take care not to pull the tape to tightly or leave it too loose. There is no need measure leaving space for two fingers, just measure comfortably. If your dog has neck flaps, be sure to lift them up and out of the way.
How to Measure
Measure around the neck
Measure your current collar
Have a collar that fits great? Use that to measure! For slide release buckle style collars, use a ruler or measuring tape to measure from the beginning of the material on the female buckle side to the tip of the male buckle side (fig. 1). For prong buckle style collars, measure from the beginning of the material to the hole that you use (fig. 2)