A quick note: a few links below are affiliate links. Buy through one and we may earn a small commission. It never costs you more, and we only point to gear we'd actually put in front of our own dogs. As an Amazon Associate I earn from qualifying purchases.
“Senior” on the front of a dog food bag is not a regulated life stage. The Association of American Feed Control Officials recognizes gestation and lactation, growth, maintenance and all life stages, and nothing else. So the useful parts of a senior dog food label are the ones printed in small type: the nutritional adequacy statement, the calorie content and the ingredient list. And the decision about what your dog actually needs belongs with your vet, who can score your dog’s weight and muscle.
What changes with age
The AAHA senior care guidelines on nutrition say senior pets may have changing energy and nutrition requirements and may lose muscle or overall weight. Maintenance energy requirements generally decrease over a dog’s lifetime, so an older dog often needs fewer calories to hold the same weight. Dogs tend to lose lean body mass and gain fat as seniors, and lose overall weight with advanced age. Reduced protein synthesis and increased turnover may contribute to the muscle loss.
Short on time? Jump straight to the Hill's Science Diet dog food
Both ends of the scale carry risk. AAHA says obesity affects mobility and contributes to inflammatory processes, and that poor mobility and decreased activity are associated with a shorter time to death. On the other side is cachexia, weight loss with excessive lean mass loss from severe or chronic disease such as kidney disease, heart disease or cancer. An older dog losing weight without trying should see the vet, not get a new bag of food.
When does a dog count as a senior in the first place? AAHA ties it to the last quarter of estimated lifespan, which makes it age 7 to 8 for large dogs and around 12 for small ones. You can read more in when is a dog considered a senior.
What AAHA says a senior diet may look like
AAHA states plainly that AAFCO does not currently have guidelines for senior nutrition. It then describes the general direction: senior dogs have decreased maintenance energy requirements and need less caloric density and more fiber to optimize body condition score. A senior diet may include mild increases in protein content and quality to compensate for lean mass loss. Note the word “mild,” and note the word “may.”
The guidelines also report that calorie-restrictive diets have been shown to increase dogs’ longevity, with an ideal body condition score of 4.5 to 5 out of 9. And adding moisture to food increased the digestibility of nutrients in senior dogs in a recent study. Neither of those is a reason to change the diet on your own, but both are fair questions for the vet.
Reading the label
The AAFCO guide to reading pet food labels lists what a label must carry: the product and brand name, the species, a quantity statement, a guaranteed analysis, an ingredient statement, a nutritional adequacy statement, feeding directions for most complete and balanced products, and the name and address of the guarantor.
| Label item | What to take from it, per AAFCO |
|---|---|
| Nutritional adequacy statement | Says what type of pet and what life stage the food is suited for; treats and snacks are exempt |
| Guaranteed analysis | Minimum crude protein, minimum crude fat, maximum crude fiber, maximum moisture; “crude” is the analytical method |
| Ingredient statement | Ingredients listed in descending order of predominance by weight |
| Calorie content | Kilocalories per kilogram as fed, and per familiar unit such as a cup or can |
| Feeding directions | Guidelines that may need modification to meet a particular pet’s needs |
“Complete” means the food has all the required nutrients and “balanced” means they are in correct ratios. The adequacy statement comes in three formats: formulated to meet the AAFCO Dog Food Nutrient Profiles for a life stage, shown by animal feeding tests using AAFCO procedures, or comparable to a product substantiated by feeding tests. It usually sits on the back or sides in small print. Because there is no senior stage, a “senior” food will normally carry a maintenance or all life stages statement. Check which one.
The name tells you something too
AAFCO’s naming rules are worth knowing. In a “Beef Dog Food,” beef must make up at least 95 percent of the weight, not counting added water. A “dinner,” “entree” or “platter,” or a name such as “for Mature Dogs,” needs at least 25 percent of the named ingredient not counting water. A “with” product has less. “Light” or “lite” must be a nutritionally significant reduction, and a lite dry dog food cannot exceed 3,100 kcal per kilogram. Terms like “less” or “reduced calorie” must show the comparison product and the percentage of reduction.
Questions to put to the company
The WSAVA Global Nutrition Toolkit says unregulated terms such as “holistic” or “premium” are of little practical value. It suggests asking whether the maker employs a nutritionist with a PhD in animal nutrition or board certification (ACVN or ECVCN), who formulates the diet, what the quality control process is, and whether nutrition studies are published in peer-reviewed journals. Calorie information is only required on pet food labels in the US, so if it is missing, ask the manufacturer. The toolkit also says to look at who makes the food, with “Made by” being different from “Made for” or “Distributed by.”
One line from WSAVA is worth keeping: if the manufacturer cannot or will not provide any of this information, veterinarians and owners should be cautious about feeding that brand. It also notes that diets labeled “for all life stages” are formulated for reproduction and growth, which may be more than a senior dog needs. That is the toolkit’s wording, and the question of what your own dog needs is one for the vet.
Treats, medical foods and the 10 percent rule
Snacks and treats do not have to meet adequacy if they are labeled as such. WSAVA says short-term, intermittent or complementary foods should be 10 percent or less of the diet, or be fed under veterinary supervision. Veterinary medical foods are different: AAFCO says they need an adequacy statement and may omit feeding directions if the label says to use only as directed by your veterinarian. If your vet has recommended one, follow the vet’s instructions, not the bag’s.
For the other end of the life cycle, our guide to choosing puppy food without falling for the marketing covers the same label with a different life stage, and orthopedic beds for large and senior dogs is the other half of the senior setup.
Common questions about senior dog food
Is there an official definition of senior dog food?
No. AAFCO recognizes gestation and lactation, growth, maintenance and all life stages, and AAHA notes AAFCO does not currently have guidelines for senior nutrition.
Do senior dogs need more protein?
AAHA says a senior diet may include mild increases in protein content and quality to compensate for lean body mass loss. Ask your vet whether that applies to your dog, especially if there is kidney disease.
Do older dogs need fewer calories?
Generally yes. AAHA says maintenance energy requirements decrease over a dog’s lifetime, though a dog losing weight unintentionally needs a vet visit.
Where is the nutritional adequacy statement?
AAFCO says it is on the back or sides of the package in small print, and it tells you what type of pet and what life stage the food suits.
Are words like premium or holistic meaningful?
WSAVA says unregulated terms such as holistic or premium are of little practical value.
Google lets you pick which sites come up first in your own results.