My wife and I got a super shocked expression from our vet when we told her we looked up the expected calorie requirements by weight for our cats and then measured based on the food label, and then asked her to confirm that we had the right estimates. She was so happy to see people take an active interest in their animals wellbeing. We have three dogs and three cats and all of them are at a perfect weight, we'll exercised, we'll adjusted and social, and happy as can be.