Pet Greens Original Live Pet Grass is great for all your Pets! Now your pets can get their greens on in a tasty, healthy treat! Pet Greens Original Pet Grass is a super source of green nutrition and fiber and is gluten free. It is a safe alternative to dangerous houseplants and chemically treated grasses. Pet Greens are also a pruning and juicing treat for birds along as a great source of calcium for reptiles.