Watch your dog’s skin and coat shine when you feed him The Missing Link Collagen Care Skin And Coat Soft Chews. You’ll be amazed at the difference. They taste delicious . They are crafted with omega vitamins to promote a glossy coat. Coconut and fish oil to maintain moisture levels. Collagen to support hair and nail growth. These Missing Link supplements are veterinarian formulated with all-natural, non-GMO ingredients and made in the USA.