How to Measure
First, get a piece of string or flexible tape measure.
Second, place one end of the string or tape between the dog’s ears.
Third, take the other end of the string or tape & go around the dog’s head either in front of the ears or just behind the ears. See the red lines on the diagram. Don’t pull tight.
That is the head measurement (send that number to me with your order). The BarkDanna will actually be two inches bigger.