This is a veterinarian tool for calculating the calorie needs of dogs and cats based on weight and activity level. This information is then used to determine how much food they should be given for each feeding.KibbleCalcVM comes in both a Lite and Pro version.KibbleCalcVM includes a database of breed choices, activity levels and food brands to assist in the calculations. In the Pro version these lists are more robust and you have the ability to edit the lists and add your own new items.