How to Measure Your Dog for a Collar I'll be honest—when I first started keeping dogs after years of focusing on aquariums, I made the rookie mistake of eyeballing collar sizing. Figured if it looked about right, it'd work fine. Ended up with a collar that my Shiba Inu could slip out of during walks, which taught me real quick that how to measure dog for collar sizing isn't something you guess at. Just like how I learned you can't eyeball water parameters in a reef tank, proper collar measurement requires actual numbers and a methodical approach. In this guide, I'm walking you through exactly how to measure your dog for a collar using techniques I've refined over the years—some learned from trainers, others from my own trial-and-error. You'll learn the proper measurement technique, how to account for different coat types and growth stages, and  ...