A method for preparing a dog food composition for a dog having an athletic or a robust body conformation type, comprising: providing a kit comprising, in separate containers in a single package or in separate containers in a virtual package, an electronic device for determining, whether a dog is of robust or athletic body conformation type based on data input by a user, instructions for how to use the electronic device, a food composition for a robust dog with a protein content of from about 20-30% on a dry matter basis and a fat content of less than about 15%, and a food composition for an athletic dog with a protein content of from about 20-30% on a dry matter basis and a fat content of from about 15-25% on a dry matter basis determining with the electronic device, whether a dog is of a robust or athletic body conformation type, wherein a robust dog is characterized by at least one characteristic selected from a body mass index of greater than 90 kg/m 2 and an energy requirement of less than 120*(kilograms of ideal body weight) 0.75 kilocalories per day, and wherein an athletic dog is characterized by at least one characteristic selected from a body mass index of less than 90 kg/m 2, and an energy requirement of more than 120*(kilograms of ideal body weight) 0.75 kilocalories per day; providing the dog food composition for a robust dog, when it is determined that the dog is of the robust body conformation type, or providing the dog food composition for an athletic dogs, when it is determined that the dog is of the athletic body conformation type. providing a kit comprising, in separate containers in a single package or in separate containers in a virtual package, an electronic device for determining, whether a dog is of robust or athletic body conformation type based on data input by a user, instructions for how to use the electronic device, a food composition for a robust dog with a protein content of from about 20-30% on a dry matter basis and a fat content of less than about 15%, and a food composition for an athletic dog with a protein content of from about 20-30% on a dry matter basis and a fat content of from about 15-25% on a dry matter basis determining with the electronic device, whether a dog is of a robust or athletic body conformation type, wherein a robust dog is characterized by at least one characteristic selected from a body mass index of greater than 90 kg/m 2 and an energy requirement of less than 120*(kilograms of ideal body weight) 0.75 kilocalories per day, and a body mass index of greater than 90 kg/m 2 and an energy requirement of less than 120*(kilograms of ideal body weight) 0.75 kilocalories per day, and wherein an athletic dog is characterized by at least one characteristic selected from a body mass index of less than 90 kg/m 2, and an energy requirement of more than 120*(kilograms of ideal body weight) 0.75 kilocalories per day; a body mass index of less than 90 kg/m 2, and an energy requirement of more than 120*(kilograms of ideal body weight) 0.75 kilocalories per day; providing the dog food composition for a robust dog, when it is determined that the dog is of the robust body conformation type, or providing the dog food composition for an athletic dogs, when it is determined that the dog is of the athletic body conformation type.