Swimming for dogs: the low-impact exercise owners overlook

Is swimming good for dogs with stiff joints?

You know the look. Your dog watches the ball sail across the park, thinks about it, and decides the couch was the better plan. Long walks leave them sore, but sitting still all day does not help either.

Water is one of the few places where a stiff dog can work hard without pounding their joints. Cornell's veterinarians list "low-impact activities, such as leash walks or swimming" among lifestyle changes for dogs with osteoarthritis (Cornell). The AKC puts it simply: "Buoyancy reduces stress on joints," while the water's resistance helps build muscle and endurance (AKC).

Muscle matters here. CARE notes that keeping weight down and muscle on are both important in managing arthritis, and muscle is exactly what a dog loses when walks get shorter (CARE).

Why is water exercise low impact?

Water holds your dog up. The deeper the water, the less weight their legs carry. Purdue's veterinary hospital, citing a 2010 study, reports how much of their own weight a standing dog carries at different water depths (Purdue):

Body weight a dog carries in water

Swimming goes further. Purdue describes it as a "complete lack of weight bearing and concussive forces," and notes that dogs bend their joints more when swimming than when walking (Purdue). Purdue also points out that peer-reviewed research on water therapy in dogs is still limited, so think of it as a useful tool, not a cure-all.

That is why rehab vets use water. VCA lists hydrotherapy among the physical therapies used to "improve a pet's mobility and reduce pain," for conditions including chronic arthritis and hip dysplasia (VCA). Canine Arthritis Resources and Education (CARE) adds that dogs in underwater treadmill programs showed better weight loss and kept more muscle (CARE).

How do I start swimming with an older or stiff dog?

Slowly, and with a plan. The AKC says never to toss a dog in. Start in shallow water, let them get used to wet feet, and go deeper only gradually (AKC).

Your first swim session

1. Check the temperature. The AKC suggests water temperature plus air temperature should add up to at least 100°F. Older dogs chill fast, so warmer is kinder.
2. Fit the life jacket on dry land. Let your dog sniff it, then wear it around the yard for a few minutes with treats. Look for a snug fit, a sturdy handle on top and a D-ring for a leash.
3. Walk in together. Use a gentle slope, steps or a ramp. No jumping off docks or pool edges, which jars stiff joints.
4. Swim for 2 to 5 minutes. Support your dog under the belly or hold the handle at first. Stop while they are still keen.
5. Show them the way out. The AKC suggests pointing your dog to the shore or pool ramp while you swim together, so they learn the exit.
6. Dry off and warm up. Towel them well, dry inside the ears, and give them a warm, soft spot to rest.

The temperature rule, the handle and D-ring, and the exit practice all come from the AKC's swimming guide (AKC).

Build up by a minute or two per session over several weeks. The AKC suggests keeping sessions to "10 minutes maximum" to help prevent water toxicity, which happens when a dog swallows too much water (AKC). Vomiting after swimming is a common sign. Bring fresh drinking water so they are less tempted to gulp the pool or lake.

Afterwards, watch how your dog moves that evening and the next morning. A little tired is fine. Stiffer than usual means the session was too long, the water too cold, or the entry too hard.

Which dogs should not swim?

Not every dog is a good candidate. The AKC notes that "not all dogs are good candidates for hydrotherapy," and that home hydrotherapy is not advised for dogs with medical conditions (AKC). Short-legged or long-bodied breeds can also struggle in the water (AKC).

And never force a dog who hates water. A short, happy paddle beats a long, stressful one, and there are plenty of gentle games for older dogs on dry land.

Pool or lake: which is better?

Each has trade-offs. Here is how they compare for a stiff dog.

For a pool, a floating ramp gives your dog an easy way out. The same idea, a gentle slope instead of a jump, helps at home too: see dog ramp or dog stairs.

When choosing a life jacket, the AKC suggests one that is durable, waterproof and adjustable, with a sturdy handle and a D-ring (AKC). Measure your dog's chest and neck and check the size chart rather than going by weight alone.

How do I find a canine rehab pool near me?

Start with your vet. VCA notes that a veterinary referral is often required for rehab, and outside rehab providers usually report back to your regular vet (VCA).

Look for these letters after a name:

• CCRP (Certified Canine Rehabilitation Practitioner) or CCRT (Certified Canine Rehabilitation Therapist): credentials that show advanced training in canine rehabilitation (VCA; CARE).
• DACVSMR: a board-certified specialist in sports medicine and rehabilitation. The American College of Veterinary Sports Medicine and Rehabilitation has a find-a-diplomate search on its site (ACVSMR).

CARE also points owners to the rehabvets.org directory (CARE). The AKC suggests visiting a facility before booking, to meet the team and see the equipment (AKC).

What to do next

1. Ask your vet whether swimming suits your dog, especially if they have any health condition.
2. Buy a fitted life jacket and practice wearing it on dry land this week.
3. Plan one short swim of 2 to 5 minutes in warm, calm water with an easy way out.
4. Pair it with land exercise: our guide on how far to walk an older dog helps you balance the week, and how to set up a dog-friendly home for stiff joints covers the rest of the day.
5. Not sure what you are seeing? Read 8 everyday signs your dog's mobility is changing.