Many dogs love a good swim or playing fetch in the water. These activities seem pretty harmless to your pup, especially considering how much fun they are having. However, your pup can have too much of a good thing. A lot of pet owners don't realize that it's actually possible for your dog can have too much water. Water intoxication, which results in life threatening hyponatremia (excessively low sodium levels), is a relatively rare but frequently fatal condition in dogs. Dogs who enjoy playing in water for long periods of time are at the highest risk. However, even a lawn sprinkler or hose can pose a hazard for pets that love to snap at or "catch" spraying water. Hyponatremia occurs when more water enters the body than it can process. The presence of so much water dilutes bodily fluids, creating a potentially dangerous shift in electrolyte balance. The excess water depletes sodium levels in extracellular fluid (fluid outside of cells). Sodium maintains blood pressur...