Science answer
Senior Dog & Cat Nutrition
Senior pets may need nutritional adjustment as energy requirements, body condition, muscle mass, digestibility and health status change, but age alone does not automatically mean a pet should switch to a “senior” diet.
Nutrition decisions should follow the individual dog's or cat's body condition, muscle condition, appetite, activity, health status and the nutrient profile of the food.
What changes with age
Monitor the pet, not just the birthday
Energy needs
Maintenance energy requirements generally decline over a dog's lifetime, while changes in older cats can be more variable.
Lean body mass
Age-related muscle loss can make muscle-condition monitoring increasingly important in both dogs and cats.
Digestibility & appetite
Some senior cats may have reduced nutrient digestibility, while palatability and feeding pattern can also become more important.
CaniBowl application
What Senior Nutrition should mean
For CaniBowl, Senior Nutrition should be an individual-context category, not a universal low-calorie formula triggered by age alone.
A useful senior feeding assessment should consider species, body condition, muscle condition, current diet, activity, appetite, weight trend and relevant veterinary findings.
Dogs and cats should not be treated identically: healthy older cats may need different calorie density, digestibility and protein considerations from healthy older dogs.
Important limitation
“Senior” is not a regulated nutrient profile
AAHA notes that AAFCO does not define specific nutritional requirements for mature, senior or geriatric pets.
That means a label saying “senior” is not enough on its own to judge whether a diet is appropriate for a particular older dog or cat.
Sources
Reference basis
AAHA — 2023 Senior Care Guidelines: Nutrition
AAHA — Age-specific and Breed-specific Diets
Reviewed by Corwin Lim
Founder, CaniBowl · Pet Nutritionist · Pet Baking Technician