You need to take 4 measurements of your dog while he/she is standing up with normal, comfortable posture:

1. Measure the total length of your dog from the end of his nose back to the base of his tail (do not include the tail). This measurement is used to determine the width and depth of the interior of your dog house. The width and depth of the house should ideally be at least equal to this measurement.

2. Measure the total height of your dog from the ground to the top of his head. This measurement is used to determine the height of the house. This interior height of the house should be at least equal to the total height of your dog. The interior height can be up to about 50% taller than than the total height of your dog and still offer good heat retention during cold weather.

3. Measure the shoulder height of your dog from the ground to the top of his front shoulder. This measurement is used to ensure that the door on the dog house is tall enough for your dog to comfortably enter. The door opening height should be at least equal to 75% of your dog's shoulder height. Dogs are very comfortable ducking down to enter their dog house, so the door opening does not necessarily need to equal your dog's shoulder height.

4. Measure the width of your dog at it's widest point (for most breeds this will be between the front shoulders). This measurement determines the width of the door opening that is required for your dog to comfortably enter the house. The width of the door opening should be at least 1 inch greater than this measurement.

Send these 4 measurements in with your order and your dog will fit perfectly