The present invention provides a method for selecting a petfood having both a palatability effect and a calorie intake reducing effect for pets, said method being based on a specific analysis of data collected in a pet feeding trial. The present invention further provides an automated pet feeding system for use in a pet feeding trial according to such a method, as well as a method for feeding a pet with a petfood having both a palatability effect and a calorie intake reducing effect for pets.
