Greenies Treat for Senior Dogs (Teeny, 43 Pack) Greenies LifeStage Senior Treats are specially made low calorie treats for dogs over 7 years old. Available in the following sizes: Large for dogs between 50 and 100 pounds, 8 Count Regular for dogs between 25 and 50 pounds, 12 Count Petite for dogs between 15 and 25 pounds, 20 Count Teenie for dogs between 5 and 15 pounds, 43 Count Feed 1 Greenies? per day. Not suitable for dogs less than 5 lbs or dogs less than 6 months of age. Fresh drinking water should always be available. Attention: As with any edible product, monitor your dog to ensure the treat is adequately chewed. Gulping any item can be harmful or even fatal to a dog.