Pedigree Biscrok are small bone shaped dog biscuits that are both delicious & crunchy. There are 3 different types of dog biscuits within each box, Original, Chicken & Marrowbone varieties, that have been enriched with vitamins & calcium to help maintain a healthy, active dog. Biscrok dog biscuits provide a delicious snack or reward for good behaviour that can be given to compliment your main feeding programme.