All dog food and cat food from Yarrah is complete. This goes for both the dry food and the wet food in tins and alu dishes. Complete means that the food contains all of the things that are essential for your cat or dog. So extra food will not be necessary. Do bear in mind that the nutritional value of tinned food is somewhat lower than that of kibbles due to the high moisture content. Consequently, your cat or dog will need much more tinned food than he will kibbles to get the same amount of energy.