Well we have tried Buddy belt and it's just not working. I've heard so many good things, and still. The problem is that Taggert doesn't quite fit the size 3, but he is too small for the size 3.5. The result is that the strap doesn't fit across the top of the shoulder blades like it's supposed to. The 3.5 fit foxxy perfectly. And we are really sad it doesn't work because these are darned expensive.
Phoebe got a Gooby comfort x
. I have been shopping around for good harnesses for years with my dogs. Overall, the gooby fits Phoebe well, but not Taggert. I will have to see the next time I go looking for a harness, whether or not the next size up will be good for taggert because phoebe's harness is just a little too small for taggert.
You just never know how they're going to fit until they're brought home and it's too late to return them. We've tried step ins, puppias, mesh fronts, anti pulling harnesses, front lead harnesses, buddy belt, h-style, y-style, vest style, head harnesses(gentle leader and snoot loop), collars, seat belt harnesses, and hiking harnesses.
With chihuahuas no 2 bodies are alike. Signs that your dog is not comfortable in the one he is wearing include balding patches, excessive itching, decreased range of motion, hot spots under the harness, chewing on the harness, reluctance to put the harness on for activities outside, puffing out the chest to avoid having a good fit (like horses do with saddles), freezing in place after being dressed, and excessive pulling or lagging while on lead.
A harness should fit without the dog really even noticing it, and it should have no dangling straps that the dog can get a hold of and chew. The harness should not have front straps that the dog can slip its jaw underneath, and should not rest on the neck. Soft front and mesh harnesses should not have inflexible edging as this defeats the purpose of having flexible mesh. edging should not dig into the fur or skin. Harnesses in most jurisdictions have to be made of either nylon or leather to comply with leash laws, but wool harnesses also work well for tiny dogs and may be easier on their skin. The only problem with wool is that you have to usually make your own.