Okanagan summers mean lake days, but water comes with risks for dogs, including drowning, blue-green algae poisoning, ear infections, and stomach upset from drinking lake water. A few simple precautions keep swim days safe and fun. Peach City Animal Hospital in Penticton can help if your dog runs into trouble.
Not every dog is a strong swimmer
It is easy to assume all dogs can swim, but that is not true. Some dogs tire quickly, panic in deep water, or have body shapes that make swimming hard, and even strong swimmers can get into trouble in cold water, currents, or when leaping off a dock. Always supervise your dog around water, introduce swimming gradually and positively, and consider a properly fitted canine life jacket for boating, deep water, or dogs who are unsure swimmers.
Blue-green algae: a deadly summer hazard
One of the most serious warm-weather risks in Okanagan lakes and ponds is blue-green algae, also called cyanobacteria. It can form blooms that look like green, blue-green, or pea-soup scum on the water, and the toxins it produces can be rapidly fatal to dogs who swim in or drink contaminated water. If water looks scummy, discoloured, or smells foul, keep your dog out of it entirely. If your dog has been in suspicious water and becomes unwell, with vomiting, diarrhea, weakness, tremors, or seizures, treat it as an emergency and seek care immediately.
The dangers of drinking lake water
Dogs love to gulp lake water, but it carries risks. Swallowing too much water during play, sometimes called water intoxication, can dangerously dilute the body’s salts and is a genuine emergency, more likely in dogs who repeatedly retrieve or bite at water. Lake water can also harbour parasites and bacteria that cause stomach upset or illness. Bring fresh drinking water and a bowl to the beach, take breaks, and discourage your dog from drinking where they swim.
Ear infections and skin from swimming
Water trapped in the ear after swimming creates the warm, damp environment that ear infections love, especially in dogs with floppy ears. Trapped moisture in the coat can also irritate the skin and contribute to hot spots. After every swim, dry your dog well, particularly the ears and any skin folds, and ask your veterinary team about a suitable ear-drying routine if your dog swims often. Our medical services and pet diagnostics teams can help if an ear or skin problem develops.
Other waterside hazards
The beach holds a few more risks worth knowing. Hot sand and docks can burn paw pads, so test surfaces with your hand and offer shade. Discarded fish hooks, broken glass, and sharp rocks can injure feet, and dogs can get sunburned, especially those with thin or light coats. Heat is a constant Okanagan concern, so bring water and shade and watch for overheating. Keep your dog leashed where required and away from boat ramps and currents.
After-swim care and when to call the vet
After a day at the lake, rinse off lake water, dry the ears and coat, check the paws and skin for cuts or irritation, and offer fresh water and a rest in the shade. Call your veterinarian, or seek urgent care, if your dog shows vomiting, diarrhea, weakness, tremors, breathing trouble, a painful ear, or any unusual signs after being in the water, particularly if blue-green algae could have been involved. When in doubt after a suspicious swim, it is always safer to call. Regular checkups through our wellness program keep your dog ready for an active summer.
Packing for a safe lake day
A little preparation makes lake days safer. Before you go, check for posted water advisories about blue-green algae, and bring plenty of fresh drinking water and a bowl so your dog is not tempted to drink where they swim. A fitted canine life jacket is wise for boating, deep water, or weaker swimmers, and a towel helps you dry the ears and coat afterward.
Pack a small kit for comfort and minor mishaps: shade such as an umbrella or pop-up tent, a way to offer cool water and rest, and basic first-aid supplies for a cut pad or torn nail. Know where the nearest open veterinary clinic is, just in case. With these basics on hand, you can relax and let your dog enjoy the water safely.
Frequently asked questions
How do I know if a lake has blue-green algae?
Look for green, blue-green, or pea-soup-like scum, discoloured water, or a foul smell, and heed posted advisories. When in doubt, keep your dog out, since you cannot reliably judge toxicity by sight alone.
My dog drank a lot of lake water. Should I worry?
Usually a few gulps are fine, but swallowing large amounts during play can be dangerous, and lake water can cause stomach upset. Watch for vomiting, bloating, weakness, or confusion, and call your veterinarian if they appear.
Does my dog really need a life jacket?
Not every dog, but a fitted life jacket is wise for boating, deep or cold water, weak swimmers, and senior dogs. It adds buoyancy and a handle to lift your dog out safely if needed.
Why does my dog get ear infections after swimming?
Water trapped in the ear creates a warm, damp environment where infections thrive, especially in floppy-eared dogs. Drying the ears after swimming and a vet-approved routine help prevent them.
Can dogs get sunburned at the lake?
Yes, especially dogs with thin, light, or short coats, and on the nose and belly. Offer shade, limit midday sun, and ask your veterinarian about pet-safe sun protection for at-risk dogs.
What are the signs of water intoxication?
Signs include vomiting, bloating, stumbling, glazed eyes, lethargy, and in severe cases collapse or seizures. It is an emergency, so seek care immediately if you see them after heavy water play.
Heading to the lake this summer? Keep swim days safe, and if your dog runs into trouble, call the team at Peach City Animal Hospital in Penticton right away.