Bathing a dog in the bathtub can be done as long as certain safety precautions are taken. Before bathing your dog, cover any drains or outlets to prevent water from escaping and ensure that the water temperature is comfortable for your pet. A Additionally, it is important to ensure that the tub's surface is non-slip to avoid any potential injuries. Lastly, consider using a mild shampoo specifically designed for dogs and provide plenty of towels nearby to dry your pet off after their bath. With these safety measures in place, bathing your dog in the bathtub can be a safe and effective way to keep them clean and well-groomed.