Hill's® Prescription Diet® k/d®+ Mobility Canine is a complete and balanced food that provides all the nutrition your dog needs. Chronic kidney disease (CKD) is a condition often associated with advanced age. It is also common for senior dogs to develop other age-related conditions such as reduced mobility or cognitive dysfunction which can significantly impact the quality of life of both the pet and the pet parent. Nutrition can play a key role in managing these age-related conditions. That is why Hill’s nutritionists and veterinarians developed new Prescription Diet® k/d®+Mobility for dogs. This clinical nutrition not only supports your dog's kidney function but also helps to improve his mobility and increase his cognitive alertness and vitality. This product requires a veterinary prescription.