Ark Naturals introduces the Sea Mobility Joint Rescue line of jerky treats, formulated to support hip and joint health in dogs of all ages. The all-natural treats come in lamb, chicken, venison and beef flavors, the company states. They contain glucosamine, MSM, chondroitin and sea cucumber. Packaged in 9-oz. bags, the treats are especially good for active family dogs, performance dogs and working or service dogs, the company adds.