Nowadays, pets are in millions of homes worldwide and as a consequence an increasingly sophisticated pet food industry
developed focusing mainly on pet’ nutrition needs. Domestic animals have only limited freedom to choose their own diets
and to a certain degree are dependent on the judgement, prejudice or will of their owners. Other criteria influencing the
food choice for dogs and cats are more related to those for human food. Pets share many of the foods that their owners enjoy,
and the owner assumes that there is much in common between his/her own likes and dislikes and those of his/her dog (Rofe
and Anderson, 1970). Moreover, owners prefer buying dried pet food due to its shelf-life, nutrient content and because it is
cheaper