The utensils from which the dog eats, should be not fragile. For that aluminium bowls or enameled approach. The internal surface of a bowl should be ideally smooth, not have having chopped off, differently the dog will injure toughne when will start absolutely lick it. The rests of not eaten forage from a bowl should be puting in a refrigerator or thrown out, the bowl washes. If a dog big a bowl put on a support that the dog did not drop to forepaws.