Dog Grass Pet Bowl (Barley Grass, Hordeum vulgare) Barley grass for dogs are all natural treats to grow and give to your pet. Just cut the grass and feed to your pet by hand or sprinkle on their food. The grass will continue to grow and can be enjoyed over and over. Includes: organic seed, reusable recycled US steel bowl, growing medium, and directions. Bowl 2.75" high x 8.25" diam.