This dehydrated chew comes from 100% pasture-raised duck. They are a great source of protein and B vitamins. Hormone-free and humanely raised. No antibiotics, No chemicals, No pesticides. Sourcing: White Oak Pastures in Bluffton, Georgia. ***We choose to source from working farms which means animals may not mature on our timetable. At times, this means we will not have access to unlimited inventory.