The stairs are a test: reading your senior dog’s joints
Small changes in how they rise, climb and settle say a lot. Here’s what to watch — and what to ask your vet.
By the AminoTails Science Team · Reviewed by our veterinary advisory board* · August 2026

Key takeaways
- The earliest joint changes show up in transitions: rising, climbing, settling.
- Body weight is the single biggest lever you control.
- Film the stairs once a month — it turns a hunch into something your vet can see.
The first signs are quiet
Dogs are good at carrying on. Joint changes rarely arrive as a limp; they arrive as a pause. A slower start after a nap. A beat of hesitation before jumping into the car. A walk that ends a block earlier than it used to.
Other small tells: sitting with one leg kicked out to the side, licking at a wrist or knee, stiffness that eases after a few minutes of moving, or a new reluctance on slippery floors.
The stairs test
Pick one staircase and film your dog going up it once a month, from the side, at their own pace. Watch for bunny-hopping with both back legs together, pauses on the landing, or a shift in weight to the front.
The point isn’t to diagnose anything at home. It’s to give your vet a clear before-and-after instead of “I think he’s a bit slower?”
Joint changes rarely arrive as a limp. They arrive as a pause.
What helps, day to day
- Keep them lean. In a fourteen-year study of Labrador retrievers, dogs fed to stay lean lived around two years longer and showed joint changes later than their littermates.
- Shorter, more frequent walks beat one long weekend hike.
- Grip matters. Runners on hard floors and a ramp for the car save a lot of small strains.
- Swimming is excellent low-impact exercise, if your dog enjoys it.
- A supportive bed away from drafts makes the first steps of the morning easier.
Where supplements fit
Supplements are support, not a substitute for any of the above. Joint Plus pairs daily cartilage support from Cartalax with weight-based dosing; Joint Pro adds BPC-157 for the tendons and ligaments around the joint.
Whatever you choose, give it six to eight weeks of consistent daily use before you judge it — and keep filming the stairs.
When to call the vet
Sudden lameness, a swollen joint, crying out when touched, or refusing to put weight on a leg are reasons to call your veterinarian the same day — not things to watch and wait on.
This article is for general education and isn’t veterinary advice. Every pet is different — talk to your veterinarian before starting a supplement, especially if your pet is pregnant, on medication or managing a health condition.
Formulas in this story
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Cartalax+Thymogen
Cartalax + Thymogen for the golden years: mobility and immunity.
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