The invention provide methods and materials for producing nutritious pet chews comprising an edible thermoplastic comprising from 45 to 80 wt. % starch selected from one or more potato and non-potato starches wherein said starch comprises at least 28% amylose as determined by size exclusion chromatography if less than 50% of said starch is potato starch or at least 20% amylose as determined by size exclusion chromatography if greater than or equal to 50% of said starch is potato starch; from 5 to 25 wt. % plasticizer; 2% to 15 wt % of a humectant and from 5 to 25 wt. % water.