Your dog has main-character energy. Their harness still needs to fit. No breed shortcuts, no guessing by weight, and definitely no choosing Medium because it sounds about right.
Every breed welcome. Measuring tape required. Gato Feo attitude approved.
Start With the Harness You're Considering
Open that product's size chart and measuring diagram before reaching for the tape. Harness designs can ask for different measurements and measuring points. Follow the instructions for the exact model, not a generic chart from another harness.
What You'll Need
A soft measuring tape, or a piece of string and a ruler. Have your dog stand naturally, and keep the tape flat rather than twisted. Record the units so centimetres and inches don't get invited to the same argument.
Measure the Chest Where the Product Diagram Shows
Many harness charts use chest girth around the widest part of the ribcage, behind the front legs. Check the product's diagram for the required position, especially if its straps sit elsewhere. Record the actual measurement without pulling the tape tight or automatically adding extra inches.
Measure the Neck and Other Points if Requested
If the chart asks for a neck measurement, use the position shown in its diagram. A harness neckline may sit differently from a collar. Only take back length or other measurements where the product instructions call for them.
Match Measurements, Not Breed Labels
There is no universal XS–XL harness chart. Compare every required measurement with the exact product's ranges. Two dogs of the same breed can need different sizes, and a Large in one style may not match a Large in another.
If your dog falls between sizes or their measurements point to different sizes, follow the manufacturer's guidance or ask for help before ordering. Don't assume sizing up and tightening the straps will solve every fit problem.
Check the Fit Before the First Walk
Fit and adjust the harness according to its supplied instructions. Check for rubbing, restricted movement, and gaps that could allow escape, then reassess as your dog grows or changes shape. If you can't achieve the recommended fit, choose a different size or design rather than forcing it.
Find Your Dog's Next Walk Look
Browse Walk this Way Collars, Harnesses and Leashes, then check the individual harness's measurements before choosing. Your dog brings the personality. You bring the tape.