Old Dog Products

Mobility & back legs

Can Old Dogs Build Muscle? Muscle Loss in Senior Dogs

By The Old Dog Products team · Published

Not veterinary advice. This article is general information to help you care for your dog at home. It isn’t veterinary advice and can’t replace an exam. If you’re worried about your dog, call your vet.

You run your hand along your old dog’s back and the hips and spine feel bonier than they used to. The back legs look thinner, and the stairs take longer. Many owners wonder whether an older dog can build muscle back. The honest answer is that it depends on why the muscle is going, and that’s a question for your vet.

If you only have a minute

  • Dogs tend to lose lean body mass as they age, but muscle loss can also come from illness or pain (AAHA).
  • Get any noticeable muscle loss checked by your vet before changing exercise or diet.
  • Gentle, regular activity on good footing suits most older dogs. Your vet can tell you how much.
  • Don’t add supplements or change food without talking to your vet first.

Emergency: if your dog suddenly can’t stand or walk, drags a leg, or loses bladder or bowel control along with weakness, call your vet or an emergency vet now. See old dog back legs giving out for more.

Why do senior dogs lose muscle?

AAHA’s senior care guidelines note that dogs tend to lose lean body mass as seniors, and that weight and muscle loss can also come from disease (AAHA). A dog who is sore may also move less, and using muscles less can mean losing them. That’s why it helps to find the cause rather than just adding more exercise.

Vets assess muscle as well as weight. WSAVA’s nutrition guidelines make nutritional assessment, including body condition and muscle loss, part of every exam (WSAVA). A dog can look a healthy weight and still be losing muscle. If your dog is also getting thinner overall, read our guide on senior dogs losing weight.

Signs of muscle loss to mention to your vet

  • Hips, spine or shoulder blades feel more prominent
  • Back legs or thighs look thinner than before
  • Trouble getting up, jumping into the car or managing stairs
  • Wobbling, slipping or tiring sooner on walks

Take a photo from above and the side every few weeks. It makes changes easier to see and to show your vet.

Can old dogs build muscle?

Whether an older dog can keep or rebuild some muscle depends on why it’s being lost, and it varies a lot. There’s no guarantee. What’s realistic for your dog depends on their health, any pain, and what your vet finds. Ask your vet whether a referral to a veterinary rehabilitation practice makes sense. They can design a program for your dog.

Gentle ways to keep an older dog moving

These are general ideas. Check with your vet before starting anything new, especially if your dog has a health condition.

Regular, shorter walks

AKC suggests paying attention to pace, weather and how your dog seems during and after exercise, and shortening walks if your dog is stiff afterwards (AKC). Two or three short walks often suit an older dog better than one long one.

Good footing

AKC notes that footing affects how well a dog walks and suggests grass and sand as easier surfaces (AKC). Indoors, rugs and runners on slippery floors help your dog move with confidence.

Swimming, with guidance

Ask your vet first whether swimming is safe for your dog, especially if they have heart or breathing problems or a recent injury. AKC describes swimming as easy on the body. If your dog doesn’t swim, it suggests asking your vet about a rehabilitation center that can introduce it safely, and using a life vest (AKC). Always supervise your dog in the water.

Simple movement at home

Sniffing games, slow walks around the yard and short sessions of gentle play keep a dog moving without big effort. Stop if your dog seems sore, and let your vet know.

Food and supplements

Diet matters for muscle, but the right food depends on your dog’s health. Don’t change food or add protein powders or supplements on your own. We don’t make health claims about supplements, and this isn’t veterinary advice. Talk to your vet before starting any supplement. This is especially important if your dog has a health condition or takes any medication, because supplements can interact with medicines.

Questions to ask your vet

  • Is this muscle loss, weight loss, or both?
  • Could pain or an illness be behind it?
  • How much activity is right for my dog right now?
  • Would a rehabilitation referral help?
  • Does my dog’s food need to change?

Frequently asked questions

Is muscle loss in old dogs normal?

Some loss of lean body mass is common with age, but it can also be a sign of disease (AAHA). Always have it checked.

What exercise is best for an older dog?

Gentle, regular activity on good footing suits most older dogs. Your vet can tell you what’s right for yours.

Sources

Products mentioned

Products don’t treat any condition. They can make the home safer or easier. Ask your vet what suits your dog.

More picks in our product guide: Getting around.