Dogs and swimming: how to introduce your dog to water safely

Reading time: about 5 min

My own dogs have had very different relationships with swimming. For Faddy, water has always been an invitation he would happily accept almost any time. Oscar, on the other hand, approaches it more cautiously. I used to think all dogs could naturally swim. In reality, there is an important difference between a dog making paddling movements in water, staying safely afloat and actually enjoying swimming.

Swimming can be an enjoyable form of exercise, but even a strong swimmer can drown. A safe experience begins with gradual introduction, choosing the right place and ensuring the dog can leave the water at any time.

Can all dogs swim naturally?

Many dogs instinctively paddle when they enter water, but that does not mean they move efficiently or can keep their heads above the surface for long. Swimming ability varies from dog to dog. Labradors and Golden Retrievers often enjoy water, but breed is no guarantee. A small dog can also be an excellent swimmer when the conditions are right.

Dogs with short muzzles and distinctive airways, such as Pugs and Bulldogs, may have more difficulty breathing and maintaining their body position in water. Dogs with long bodies and short legs, such as some Dachshunds, may need extra support. Small dogs and dogs with thin coats can become chilled more quickly; currents, waves and cold water increase the danger for any dog. It is therefore inaccurate to say that a particular breed categorically cannot swim or that all large dogs can.

How to introduce your dog to water step by step

The introduction should begin by allowing your dog to choose whether to approach the water. An ideal starting point is a calm, shallow body of water with a gently sloping bottom, or a safe shallow pool that your dog can step out of independently. Never throw your dog into the water or pull them into deeper water. A frightening experience can have a lasting effect.

Start on dry land and let your dog sniff and explore. If they voluntarily step into a few centimetres of water, praise them and offer a treat if appropriate. The first attempts may last only a minute or two. This is an example rather than a mandatory training duration: finish before your dog becomes tired or frightened.

On another occasion, your dog can venture slightly deeper if they remain calm and maintain steady breathing and body position. Stay alongside them and, if needed, use a properly fitted life jacket with a handle. A jacket supports the body but does not replace supervision. If your dog begins frantically splashing with the front paws, their hindquarters sink, they struggle to breathe or desperately try to reach shore, help them out immediately. The goal is not to teach a dog to swim in one session.

A puppy can have positive experiences around water during socialisation, but puppies lose body heat quickly and have limited swimming endurance. For a very young puppy, simply wetting their paws in shallow water may be enough. Adult and senior dogs can also become comfortable around water, but some dogs never enjoy swimming, and that is perfectly normal.

Why is a life jacket useful even for an experienced swimmer?

A life jacket helps keep the body afloat, reduces exertion and lets an owner assist the dog by its handle in an emergency. Check the fit beforehand: it must not rub beneath the armpits, restrict leg movement or be loose enough for the dog to slip out. A jacket is especially sensible on boats, in deep natural waters, where there are waves and for beginners.

When choosing a swimming spot, check the entry and exit points first. Steep banks, slippery rocks and strong currents are poor places to learn. Do not let a dog chase a toy so far that they may lack the energy to swim back. A long line can help in some controlled exercises, but a lead dragging through the water can become entangled and create danger of its own. Never leave a dog swimming unattended with one.

If you have a pool at home, the dog needs an obvious way out, such as a suitable ramp or steps. Fencing helps prevent an unsupervised dog from entering the pool. A dog that swims well in a pool may still fail to find the exit when panicked.

Water quality: cyanobacteria, seawater and drinking too much

In natural waters, safety cannot be assessed by appearance alone. Possible warning signs of cyanobacterial (blue-green algae) blooms include an unusual green layer, discoloured water and a bad smell, but not all toxic blooms are visible. Check public bathing-water warnings. Never let your dog drink from or swim in suspicious water, or lick algal material along the shore. If exposure occurs, promptly rinse the coat with clean water and prevent licking. Seek immediate veterinary care for vomiting, weakness, tremors, loss of balance or seizures. Some toxins can act very quickly.

While playing in the sea, a dog may swallow enough salt water to develop salt poisoning. Swallowing extremely large amounts of freshwater in a short time can also be dangerous. Offer clean drinking water separately, take breaks during energetic fetch games and watch for repeated gulping of water when your dog grabs a toy.

After swimming in the sea, a lake or a pool, rinse your dog with fresh water as needed and dry dense or long coats thoroughly. Wet undercoats can contribute to skin irritation and hot spots. Check the ears too: a constantly damp ear canal can favour inflammation. Gently dry around the ear opening, but do not insert cotton swabs deep into the canal or use irritating homemade solutions.

When is swimming unsuitable for a dog?

Swimming is physical exercise, not automatically gentle rehabilitation. If your dog has a heart or respiratory condition, acute pain, an open wound, a skin infection, balance problems or is recovering from surgery, discuss swimming with your veterinarian first. Even with joint problems, free swimming in deep water is not the same as supervised hydrotherapy. Our article about joint problems in dogs explains the role of movement and exercise load in more detail.

In hydrotherapy, a professional can select the exercise, workload and water depth. An underwater treadmill and swimming are not identical: the treadmill allows much closer control of movement. It is wonderful if your dog loves swimming, but a dog that fears water does not have to be trained to swim at any cost. A short walk along the shore can be just as valuable a shared activity.

Sources

• CDC. Preventing illnesses caused by harmful algal blooms
• CDC. Harmful algal bloom-associated illnesses: information for veterinarians
• Cornell University. Itchy ear problems: swimming precautions
• American Kennel Club. Hydrotherapy for dogs: veterinary perspectives
• Pet Poison Helpline. Sodium toxicity symptoms in pets
• Bark & Whiskers. Can all dogs swim? (earlier source article)

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