FOR SENIOR SMALL BREED DOGS: Eukanuba Senior Small Breed Dry Dog Food is complete and balanced nutrition for senior dogs over 7 years old weighing up to 23 lb | MUSCLE & JOINT SUPPORT: Chondroitin sulfate and 50% more glucosamine (vs. Eukanuba Adult Small Breed Dry Dog Food) help keep joints mobile and supports lean muscles in active seniors | HEALTHY BRAIN FUNCTION: DHA and antioxidants support healthy brain function in senior dogs | SUPPORTS SENIOR DOGS: Optimal levels of fats and carbohydrates fuel your active senior dog’s daily activity levels | MAINTAINS NATURAL DEFENSES: Guaranteed antioxidant levels for older dogs help maintain your small dog breed’s natural defenses