Take a measuring tape and measure around the neck where the collar usually sits. Don't measure too high or too low on the neck.
Allow a couple of fingers to fit beneath the measuring tape. If you don't have a measuring tape, use a piece of string.
Alternatively, measure an existing collar from the fold of leather at the buckle, to the most used hole. We will always make your collar fit at the middle hole unless otherwise specified. You will have 2 holes to go tighter and two holes to go looser.
Martingale/Chain & Slip Collars
Measure your dog across the broadest part of the skull. This is the largest we will allow the collar to open, allowing you to slip it on and off easily, and cinch up tight when the chain is tightened.
These collars are designed to sit a little lower than regular collars. Measure your dog in both places as shown above.
Using these two measurements you will be able to select the right size ID collar. Make sure the size you select is big enough that you can slip it over their head!