Vet Worthy’s 100 percent Wild Alaskan Salmon Oil is a high-quality skin and coat liquid supplement for dogs. While other fish oils might blend salmon with other fish, this product only uses salmon oil. The salmon is fished from the Alaskan oceans, and therefore is not farm-raised. Salmon features a higher nutritional content, including more Omega-3 content and less saturated fat than many other fish. Made in the U.S.A., it is free from PCB contaminants and heavy metals, including mercury and lead.