Collar Size Guide for Our Anti-theft Collars

Measurements for DOGLOC collar size options

Size Small Medium 
Neck Circumference (in) 8.9 - 11.5" 12.0 - 14.6"
Neck Circumference (cm) 22.6 - 29.2 30.5 - 37.1


How to choose the right collar size for your dog.


Option 1: Measure your dog’s current collar

- Lay your dog’s collar flat.

- Use a ruler or a flexible measuring tape (such as a fabric or sewing tape) to measure from the start of the leather/fabric at the buckle end to the middle of the hole where the buckle is usually fastened.

Option 2: Measure your dog’s neck (preferred)

- Wrap a flexible measuring tape snugly around the widest part of your dog’s neck. If you don’t have one, you can use string or ribbon, then measure the length with a ruler or non-flexible tape.

- The collar should fit tightly enough that it can’t slip over your dog’s head, but not so tight that it restricts breathing or causes discomfort. A good rule of thumb is to ensure you can comfortably fit two fingers (your index and middle fingers) between the collar and your dog’s neck.