Quick answer: the best home exercises to strengthen a dog's back legs are slow, controlled ones: sit-to-stands, slow lead walks, gentle hill walks and stepping over low cavaletti poles. Start small, go slowly, and do a little most days. If the weakness is caused by pain, a spinal or nerve problem or an injury, exercise alone won't fix it, so get a vet check first and, ideally, a plan from a qualified veterinary physiotherapist.
Transparency note: this page is written by MedPaw, which makes a joint supplement. It is general advice, not a substitute for your vet or physio. Checked 9 October 2026.
See a vet or physio first if...
Strength work on a sore joint or an injured spine can make things worse. Get your dog checked before starting if:
- the weakness came on suddenly, or has got noticeably worse over days or weeks
- your dog wobbles, crosses their back legs, knuckles over or scuffs their back paws
- they are limping, crying out, or won't put a leg down (PDSA advises contacting your vet immediately if a dog can't put a leg down or is in severe pain)
- their back legs shake when they stand, or they have back pain, a hunched posture or any incontinence
- they have had surgery recently, such as a cruciate repair (follow your surgeon's plan; see our cruciate recovery guide)
- they have a heart or breathing condition, or are very overweight
A dog that hurts won't use its back legs fully, however many exercises you do, so ask your vet about pain relief too.
Why back legs lose strength
The back legs do most of the pushing when a dog stands up, climbs or jumps. When hips, knees or the lower back are sore, many dogs shift weight onto their front legs, so the back leg muscles do less and shrink, and getting up gets harder. PDSA lists "narrowing of the hips and back end" among the signs of arthritis in dogs.
Breaking that cycle needs two things: comfort (your vet's job) and regular, gentle strength work (yours). Our guide to muscle wasting in dogs shows how to check and measure your dog's thigh muscle at home, so you can track progress.
Four exercises that target the back legs
Back leg strengthening exercises at a glance
| Exercise | What it works | How to start | Stop if |
|---|---|---|---|
| Slow lead walks | All four legs, with no momentum to hide behind | Short walks at a slow pace on flat, grippy ground | Your dog lags, limps or is stiffer the next day |
| Sit-to-stand | Thigh and hip muscles that push the dog up | 3 to 5 slow reps, once or twice a day | The sit is lopsided or your dog struggles to rise |
| Hill walks | Hip and thigh muscles, hip bend | A short, gentle slope walked slowly uphill | Your dog pants heavily, slows right down or sits |
| Cavaletti poles | Lifting each foot, joint bend, body awareness | Poles flat on the ground, walked slowly on a lead | Your dog trips repeatedly or knocks every pole |
General guidance only. Your vet or physio may change the starting point for your dog.
1. Slow, controlled lead walks
At a slow walk a dog can't use momentum to skip weight off a weak leg, so every leg has to work. Keep your dog on a lead at your side, on flat ground with good grip. PDSA advises regular short walks each day for dogs with arthritis and warns that "a sudden increase in exercise could make your dog stiff and painful". Several short walks beat one long one. Build up by a few minutes at a time, and only if your dog is no stiffer the next morning.
2. Sit-to-stand
This is the closest thing to a squat for dogs. Ask your dog to sit squarely in front of you, then lure them to stand with a treat held at nose height, moving slightly forward. Let them stand fully, then ask for the sit again. Slow is the point: a fast bounce up uses momentum, not muscle. Standing your dog side-on to a wall or sofa helps keep the sit straight.
Start with 3 to 5 slow reps once or twice a day. If your dog always sits with one back leg flopped out to the side, don't force a square sit; it can signal knee or hip discomfort, so read our guide to the lopsided "lazy sit" and ask your vet first.
3. Gentle hill walks
Walking uphill makes the back legs push harder. In a study from the University of Veterinary Medicine Vienna (Holler et al., 2010), walking uphill caused significantly greater bending at the hip, and the researchers described it as an easy exercise that could help the flexibility of affected joints. Pick a short, gentle slope, walk up it slowly on the lead, and come down even more slowly. Save steep or long climbs for later, if at all.
4. Cavaletti poles
Cavaletti are low poles your dog steps over, so they lift each foot deliberately and bend their joints more (broom handles work). The American Kennel Club's guide suggests keeping poles at hock (ankle) height or lower, checking for sharp edges, and warming up first. Start with poles flat on the ground, one normal step apart, and walk your dog through slowly on a lead. Raise them only slightly once your dog is confident. Dogs with nerve problems should only do this with a physio's guidance.
If your dog is too sore or weak for much land exercise, ask your vet about hydrotherapy with a qualified therapist, or a veterinary physiotherapist who can tailor these exercises.
Safety notes
- Warm up and cool down with a few minutes of easy walking.
- Grip matters. Do floor exercises on a rug or mat, never on laminate or tiles. Our guide to non-slip flooring has ideas.
- Avoid high-impact play while you build strength. PDSA advises not letting dogs with arthritis "jump, skid, chase balls, or run on uneven ground".
- Watch the next day. More stiffness, limping or reluctance the morning after means you did too much. Drop back a step.
- Keep your dog slim (see weight and joint health).
Progress is slow: think weeks and months, not days. Signs it's working include getting up more easily, walking further without lagging, and fuller-feeling thigh muscles. For general mobility work, see home exercises for a stiff dog and low-impact exercise.
Can a supplement help?
No supplement builds muscle; exercise does. What a joint supplement can do is support the hips and knees those muscles move, alongside your vet's plan, so your dog stays comfortable enough to keep doing the work. Be realistic about the evidence: a 2022 review of 72 trials by Barbeau-Grégoire and colleagues found the strongest evidence for omega-3s, while glucosamine and chondroitin did not relieve pain.
If you'd like a daily joint supplement alongside the exercises, we'd suggest MedPaw Hip & Joint Chews: a soft chew given like a treat (handy as a reward after a session), with all six key joint actives including green-lipped mussel, a source of omega-3s, and a 60-day money-back guarantee. It contains mollusc and gluten, it isn't a medicine or a painkiller, and you should check with your vet first if your dog has a condition or takes medication. For more, see the best supplement for a dog losing muscle and the best joint supplements for senior dogs.
Frequently asked questions
How long does it take to strengthen a dog's back legs?
Muscle builds slowly, so expect weeks to months of regular, gentle sessions before you see a clear difference. Little and often works better than occasional long sessions. Measuring your dog's thigh once a month helps you see progress you might otherwise miss.
Can an old dog rebuild back leg muscle?
Many older dogs can regain some strength with controlled exercise, as long as pain is managed and the cause of the weakness has been checked by a vet. The goal is often to keep the strength they have and slow further loss, rather than to get back to how they were years ago.
Is walking enough to strengthen my dog's back legs?
Regular slow lead walks are the foundation, but adding sit-to-stands, gentle slopes and low poles makes the back legs work harder in a controlled way. Fast walks and off-lead running let a weak dog shift weight onto the front legs, so they do less for the back end.
Are stairs good exercise for a dog's back legs?
A few slow stairs on a lead can be part of a physio's plan, but stairs are also where weak dogs often slip. Only use them if your vet or physio suggests it.
Will a joint supplement make my dog's back legs stronger?
Not on its own. Strength comes from exercise. A joint supplement such as MedPaw supports joint health alongside your vet's advice, which can help your dog stay comfortable enough to keep exercising.
