Hi there, Great question! In short - yes, it does provide a pretty universal fit.

I originally measured only Billie because she's my dog and had a problem. But after helping about 50 other dogs, I discovered that the measurements work for most dogs with this condition. So far, I've only needed 2 sizes to cover all cases.

Of course, no two noses are exactly the same, and there will always be minor adjustments that could make an even more perfect fit - just like with any human clothing item. But the core design works well across different dogs.

I'd love to eventually offer truly custom fits for every dog, but for now, this approach has been effective for everyone I've worked with.