To figure out the size that fits your dog, measure the circumference of your dog's neck just above the shoulders. (Don't pull the tape too tight!) Choose the collar size that corresponds to your dog's measurement:
| Collar Size | Circumference |
|---|---|
| Extra Small | 5-9" |
| Small | 9-13" |
| Medium | 13-17" |
| Large | 17-21" |
| Extra Large | 23-27" |