The body size of dogs can range from 1 to 100kg, which is a greater range than any other species. There are different nutritional needs and specific health concerns linked to the size of dog. Larger dogs have a shorter life expectancy than small ones and reach senior status at a much earlier age. Therefore, larger breeds and giant breeds will benefit from a change to a Pedigree® Senior diet at an earlier age. This timeline provides an understanding of the life stages of different size dogs.