[header] How to count calories in your cat's food [title] Check the label for the number of calories. [step] In order to determine the number of calories in your cat's food, you should look at the food label to see if the calories are listed. Cat food companies are not required to put caloric information on the label. 
That being said, some brands will include caloric information. This is often the case for foods that are marketed as " light.