The aim of this study was to contrast the results of the proximal analysis in the main dry balanced foods for puppies and adult dogs marketed in Lima, Peru, with those suggested by the Association of American Feed Control Officials (AAFCO) and with the nutritional content corresponding to the label of each brand. Sixteen samples from 10 brands of dry food for puppies and dogs were collected using an intentional non-probabilistic sampling design. The samples were sent to two animal nutrition laboratories (one laboratory analysed the puppy food samples and the other the adult dog samples) to determine the levels of protein, fat, fibre, ash and moisture. All samples showed on their label a guaranteed analysis as recommended by AAFCO; however, proximal chemical analysis showed some contradictions, as is the case of fat with levels below the minimum recorded on its labels and even the minimum...