Small dogs have a very short and intensive growing period if supplied with sufficient energy and protein they will multiply their body weight by 20 within 10 months small dogs who are fed correctly as puppies may reach an age of 13 to 16 years royal canin mini junior dry dog food caters to the unique characteristics of mini breeds 1 10kg from 2 months bone and muscle building a puppy will have completed muscle growth and bone strengthening by the age of 10 months during this time its