Baby shampoo is not the best choice for dogs primarily because it is formulated for human infants and not tailored to the specific needs of a dog's coat and skin. While it is generally mild and gentle, it lacks essential elements that are vital for canine skin health. Dogs have a different pH balance on their skin compared to humans, and using baby shampoo can disrupt this balance, potentially leading to dryness, irritation, and even skin conditions over time. Additionally, baby shampoo may not effectively remove the oils and dirt specific to a dog's coat, leaving them less clean and potentially prone to skin issues. It's always advisable to opt for a dog-specific shampoo that is carefully formulated to cater to the unique requirements of a dog's skin and coat.