Hindlimb Muscle Check
A hands-on way to feel your dog's thigh and calf muscles, record what you find, and track it over months. Use it to decide when a change is worth a conversation with your veterinarian.
Educational tool, not a diagnosis. This guide teaches a hands-on check and keeps your records. It does not examine your dog or tell you what is wrong. If you are worried, see your veterinarian.
About your dog
This gives your results context and goes on the summary you can share with your vet. Muscle is compared with your dog's own earlier checks, not with breed averages.
Why check the hind legs
The hind legs drive your dog forward and lift them up from lying down, onto the couch, and up the stairs. When muscle there shrinks, those everyday movements get harder. Muscle loss in the legs can come from aging, from using a sore leg less, from joint, back or nerve problems, or from long-term illness such as heart or kidney disease.
Muscle loss often happens slowly. A monthly hands-on check, done the same way each time, makes small changes easier to notice.
Muscle is not the same as fat
A body condition score (BCS) estimates fat. It does not measure muscle. A dog can carry extra fat and still be losing muscle underneath. In a 2026 CT study of 39 dogs, dogs with a higher BCS had a smaller share of muscle in their hind-leg cross-sections, and older dogs did too. That is why this guide asks for your dog's BCS and why the two scores are most useful side by side.
By feel, healthy muscle is firm and rounded and springs back slightly. Fat is softer and moves over the surface. Bone feels hard and close to the skin.
The scale this guide uses
Each of three spots on each hind leg gets a score from 0 to 3. The two thigh spots plus the calf give a leg total out of 9.
What this tool can and can't do
The scale is adapted, in plain language, from the hindlimb muscle condition score published by Yun and colleagues in 2026. In that study two experienced veterinarians scored the dogs and agreed closely, and their scores matched CT measurements of the muscles. The study included mostly small breeds, and few dogs had moderate or severe loss.
The scale has not been tested with owners scoring their own dogs at home. Your scores are your observations. They are most useful for spotting change in your own dog over time, especially when the same person does every check.
The guidance about when to call your vet is a starting framework written for this tool. It is not a research-derived cut-off.
When to see your vet
You know your dog. If something worries you, call your vet whatever the score says.
Do a check
About five minutes. Do both hind legs, one spot at a time.
Before you start
- Have your dog stand relaxed and square on a non-slip floor. A helper can hold their head or offer a treat.
- Use the same person, the same spots and roughly the same time of day for every check.
- Use gentle, steady pressure. You are feeling shape and firmness, not pressing hard.
- Compare left with right as you go.
- Stop if your dog flinches, yelps, licks their lips, or pulls away. Tick the discomfort box below and call your vet.
