OPT:
(a). Ask yourself this before deciding on a senior diet : Senior dog diets vary based on age and breed. For example, many senior diets seek older, juvenile food than older, growing ones, as these age-specific diets expect senior to sleep longer and can give your dog protein sources.;
(b). A healthy dog would be between eight and eighteen pounds (2.1-2.7 kg per kilogram) and a senior dog nine to nine pounds (2.7 to 5.1 kg per kilogram). Younger dogs may benefit from senior diets at around eight months of age.;
(c). Additionally, there is no formal definition for what constitutes a senior diet, so these diets will vary by manufacturer. Generally, a senior diet will have altered protein content, lower phosphorus, and reduced caloric content.;
(d). Your second dog might benefit from a senior diet, but senior diets can be beneficial for your dog. If your senior dog likes to be on its feet and can't sit down for regular meals in the evenings, it may benefit from a senior diet.;Choose from options above and answer: What most naturally follows?

How to feed your senior dog a healthy diet
Determine when to begin a senior diet.
Consider your dog as an individual when deciding if it might be time to switch to a senior diet. Different dogs may benefit from senior diets at different ages.
Answer:
(c).