Water Intoxication in Pets: What You Need to Know!
- emilyjayne08
- Jun 26
- 3 min read

As the summer temperatures rise, many pet owners turn to water-based play to help their furry companions stay cool and active. Whether it's fetching toys in the lake, splashing in the kiddie pool, or chasing the garden hose, water can be a source of joy and enrichment for dogs (and even some adventurous cats!).
But did you know that too much water can actually be dangerous?
We want to raise awareness about water intoxication in pets—a rare but potentially life-threatening condition that can occur when pets ingest excessive amounts of water in a short time. Here's what you need to know to keep your pet safe while they enjoy water play.
What Is Water Intoxication?
Water intoxication, also known as hyponatremia, occurs when a pet consumes large quantities of water too quickly. This dilutes the sodium levels in their bloodstream, causing an imbalance in electrolytes. As a result, the body's cells begin to swell, including those in the brain, which can lead to serious complications or even death if not treated promptly.
Which Pets Are at Risk?
While any pet can develop water intoxication, certain factors increase the risk:
Water-loving breeds such as Labradors, Golden Retrievers, and Spaniels
High-energy pets that engage in prolonged water activities
Small dogs or puppies, whose smaller size makes them more vulnerable
Pets that bite at water from hoses or sprinklers, swallowing large amounts unknowingly
Warning Signs of Water Intoxication
Symptoms can appear rapidly—within an hour or less of excessive water ingestion. Watch for:
Lethargy or confusion
Nausea or vomiting
Bloating
Glazed eyes
Loss of coordination (stumbling, falling)
Dilated pupils
Drooling
Seizures
Difficulty breathing
Collapse or unconsciousness
If you notice any of these signs after water play, seek veterinary care immediately.
How Is It Treated?
Water intoxication is a medical emergency.
Treatment focuses on:
Correcting sodium imbalance with intravenous electrolytes
Reducing brain swelling using medications like diuretics and corticosteroids
Monitoring vital signs and neurological function closely
The prognosis depends on how quickly the condition is recognised and treated. In mild cases, recovery is possible with prompt intervention. Severe cases, especially those involving seizures or coma, may result in long-term neurological damage or death.
Prevention Tips
The good news is that water intoxication is preventable. Here’s how you can keep your pet safe:
Limit water play sessions to short intervals (10-15 minutes) and allow rest breaks.
Monitor your pet closely during play—if they’re gulping water repeatedly, it’s time to stop.
Avoid games that encourage constant water swallowing, like retrieving toys from deep water.
Use shallow kiddie pools rather than deep lakes or ponds.
Discourage biting at hoses or sprinklers, which can lead to rapid ingestion of water.
Offer plenty of regular breaks with access to fresh drinking water so they’re not tempted to drink excessively while playing.
Final Thoughts
Water intoxication might not be commonly discussed, but it’s a real risk that all pet owners should be aware of—especially during the hot summer months. While most pets enjoy water safely, a few simple precautions can help you avoid a tragic emergency.
If you have any concerns about your pet’s behaviour after swimming or playing in water, don’t hesitate to contact us or stop by our clinic. Early action can save lives.
Stay cool and safe this summer!