Anco Crunchy Collagen Bones are a natural, high-protein treat designed to support your dog’s health and wellbeing. Filled with real peanut butter for an irresistible flavour, they’re rich in collagen to promote muscle development, joint mobility, skin elasticity, and a shiny coat. The delicious taste and satisfying crunch provide mental stimulation and help support dental health by reducing plaque and tartar build-up.