King Pup - I believe there are VERY few dogs who will actually hold their urine if the situation got incredibly uncomfortable. As for holding it so long that they can't go straight away... Now you're just suggesting that my dogs are victims of cruelty. They are in no rush to even TRY to urinate when I get home... it's not as though they are rushing out, attempting to urinate, and are unable to do so because of your reasoning. In addition - they don't urinate for an extended period, as though they've been holding urine all day. My dogs drink sparingly before I leave for work after they've pottied in the morning.