1. Introduction
Pelleted dog foods are sold by manufacturers as an alternative to dry extruded dog foods. Compared to the extrusionprocess, the pelleting process is considered to be less severe with lower temperatures (60 to 90◦C vs. 80 to 200◦C) andshorter residence times (2 to 20 s vs. 10 to 120 s) (Crane et al., 2010). Processing is known to induce the Maillard reaction