Nutritional management of aging dogs requires adapting to changing metabolic needs, declining organ function, and disease conditions that alter dietary requirements throughout the senior years.
Senior dog nutrition directly affects welfare through managing the conditions that cause the most suffering in aging dogs — arthritis, cognitive dysfunction, dental pain, and organ disease. Protein restriction for healthy senior dogs — a practice historically recommended — is now understood to cause muscle loss that accelerates functional decline. Maintaining muscle mass through adequate high-quality protein supports mobility and independence that are welfare-significant for aging dogs. Cognitive dysfunction management through antioxidant-rich diets and MCT supplementation is supported by enough evidence to justify inclusion in any senior wellness protocol. Dental disease causing pain that reduces food intake requires separate management — treating dental disease often restores appetite and wellbeing dramatically in dogs whose reduced eating was attributed to aging rather than oral pain.