Why Does My Dog Drink Urine Out Of The Toilet. Back when dogs lived in the wild, running water was a healthier choice than stagnant water. Some dogs might be drawn to drink from the toilet because the water is cold and is continually refreshed every time.

If your dog isn't getting enough water, then he may resort to the urine as a means of hydration. It is also part of their natural instinct to seek out a flowing water source, and seeking out a toilet bowl is feeding that instinct. Maybe the water dish is empty.