I use ceramic bowls because I've heard that plastic can get scratches and bacteria can harbor in the scratches, and aluminum bowls, can eventually leach out nickel, which can cause a high allergic reaction. I think you are fairly safe if you replace bowls when they are starting to show signs of wear. Even with ceramic bowls, you have to be careful, some are made with lead, which can leach our if they haven't been properly made, so look for only those which say safe to use for food, but don't overlook cat food bowls, and bowls that have been made for human use. Yorkies don't need big bowls. |