Walk down any pet food aisle and you are sure to spy packages with claims such as natural, free from, and healthy, or wording that calls out specific ingredients like protein, probiotics, and omega-3s. Cat and dog food products are more sophisticated than ever and reflect many of the trends that are seen in food products for humans. Foods that come in different flavors and textures, claim to help maintain active lifestyles, and address specific health needs—all of these products are availa…