Every time when I eat something, which includes added ingredients E 320 (BHA) or E 321 (BHT), which helps the product conservation (but can also cause cancer!), I got furunculosis in-between my paw toes. Unfortunately in Germany the pet stores do not care what they sell and there are no product specifications in some domestic packages. That's why I get these allergic reactions once in a while. Today my folks realized that the yummy bones caused painful skin complaint and I needed first aid. Luckily the first aid helps in twenty-four hours. Odd that Ciara does not have similar reactions.