Measuring For a Collar
Wrap a soft measuring tape around the base of your dog's neck. Take a long, flexible measuring tape and loop it around your dog's neck directly above the shoulder blades. If you aren't sure where to measure, arrange the tape 3 to 5 in (7.6 to 12.7 cm) beneath your dog's jaw line.
Measuring For a Harness
To measure a dog for a harness, wrap a fabric measuring tape around the broadest part of the dog's chest. Typically, this is right behind its front legs. Pull the measuring tape so it's snug, but not tight, and write down the measurement. Our sizes displayed on our product pages for harnesses are measurements based on the chest girth.