Is There a Crash-Tested Dog Harness for Large Dogs?

Certification is per weight, and this is the whole point

Almost every mistake buyers make in this category comes from treating certification as a property of the product. It is not. A CPS certificate records a specific product tested to a specific protocol with a dog dummy of a specific weight. The harness is certified at that weight. Load the same harness with a heavier dog and you are outside the tested envelope, and nobody — not CPS, not the manufacturer — is telling you what happens.

That reframes the shopping question entirely. “Is there a crash-tested harness for large dogs” has no single answer. There is an answer at 75 lb, a different answer at 90 lb, a single answer at 110 lb, and no answer above it.

The buying trap on the one harness that goes to 110 lb

The Clickit Range is genuinely hard to buy reliably on Amazon: searches for it surface the discontinued Clickit Terrain instead. If certification is the reason you are buying — and if your dog is over 90 lb it is the only reason to buy this harness — buy from Sleepypod or a named retailer where you can confirm the exact model.

There is a parallel trap on the Clickit Sport. CPS certified the product called “Clickit Sport”; Amazon currently lists the “Clickit Sport Plus.” Check the CPS certified list against the exact name on the listing before you buy. This is not a technicality: the certificate names a product, and a renamed or revised product is not automatically covered by it.

Self-tested is not certified, and Kurgo is the honest example

Two harnesses in this field publish their own test data, and the distinction between that and certification is the single most important thing to understand before spending money.

Kurgo is the most transparent of the self-testers. It publishes its whole methodology: the Calspan facility in Buffalo, New York; the FMVSS 213 standard; June 2018; and rated dog weights of 25, 50 and 75 lb for small, medium and large. That is real information and more than most brands offer. It is also manufacturer-commissioned testing, the Impact does not appear anywhere on the CPS certified list, and there is relevant history: Kurgo’s earlier Tru-Fit was independently tested by CPS and recorded catastrophic failures in the small and large sizes. Knowing that is not a reason to dismiss Kurgo’s current data — it is a reason to know which kind of evidence you are relying on.

Ruffwear’s Load Up is the other common candidate, and it is not ranked on this page because it answers no weight question: it is well made, it is not CPS certified, and Ruffwear describes its hardware as “strength-rated” without publishing the rating — which is the entire point of having one. For a large dog that matters more, not less, because the load scales with the weight. It sits in its place on the crash-tested harnesses roundup.

What to do for a dog over 110 lb

No harness is certified for your dog. That is the answer, and the useful part is what follows from it:

1. A certified crate, properly secured, is the better route. Certification exists on crates too, it is also issued per dog weight, and the certified list runs higher than the harness list does. Start at the crash-tested crates.
2. Securing it is not optional and it is not the crate’s job. An unsecured crate is a projectile regardless of how well it is built. The strap kit is the purchase that matters more than the crate, and the truck-bed crates page covers tie-down properly.
3. Do not substitute a wire crate.CPS’s finding is that wire crates will not provide significant protection in an accident. In a cargo area a wire crate is distraction prevention.
4. Do not use a cargo-area tether or an extension tether as a stand-in for a restraint. If you want the reasoning in full, how CPS testing actually works sets out what certification does and does not cover.

A badly fitted certified harness is not a certified harness

Worth stating because it is where the money is most often wasted. A three-point restraint works by passing the vehicle seat belt through the harness so the load is taken across the chest panel. If the harness is loose, the wrong size, or the belt is routed through the wrong point, the test conditions no longer apply. The Clickit Sport in particular takes real care to fit correctly, and that is a cost in time you should plan for rather than discover.

The practical rules: buy by measured girth rather than by the dog’s breed or weight alone; follow the maker’s belt routing exactly; re-check the fit seasonally, since a dog that gains or loses a few pounds changes it; and never clip a car restraint to a collar. How to measure a dog for a harness is the method.

The small-dog version of this question has a stranger answer than a ceiling — it has a hole in the middle of it. Crash-tested dog harnesses for small dogs sets out the certified options by weight band, including the gap between 25 and 45 lb that the published per-size ratings create.