The senior bowl

The most common piece of senior dog advice in circulation is wrong, and it has been wrong for years.

"Reduce the protein. It's hard on old kidneys."

That belief came from a reasonable-sounding idea that never held up. Restricting protein does not protect healthy kidneys. Meanwhile, ageing dogs steadily lose muscle mass, and the thing that slows that loss is adequate good-quality protein.

So the standard advice does real harm: it accelerates the muscle loss that makes an old dog frail, weak on its back end, and less able to recover from anything.

Protein restriction is a treatment for diagnosed kidney disease, prescribed by a vet after testing. It is not a precaution for every dog over eight.

When is a dog actually senior?

Size decides this far more than age does.

A seven-year-old Great Dane is elderly. A seven-year-old Pomeranian is middle-aged. Any advice that treats them as the same is not worth following.

What actually changes with age

Muscle mass falls. This is the change that matters most, because muscle is what keeps an old dog mobile, stable on its feet, and able to get up off a slippery floor.

Calorie needs usually fall, less activity, slower metabolism, while protein needs hold steady or rise. Those two moving in opposite directions is the whole nutritional problem of old age: you need to deliver more protein inside fewer calories, which means the quality of what is in the bowl matters more than it ever did.

Digestion becomes less efficient in some dogs.

Smell and taste dull, which reduces interest in food.

Dental disease accumulates, and by this age it is close to universal.

Thirst and urination change, and any noticeable increase in either is a reason for bloodwork, not an adjustment to the diet.

What to feed

Protein: good quality, and enough of it. Eggs, chicken, fish, curd, organ meat in moderation. This is not the place to economise.

Calories: adjusted to the actual dog. Use the formula and check the ribs.

RER = 70 × (kg)^0.75, then roughly × 1.4-1.6 for a less active senior

Fat: moderate. Enough for coat and calories, not so much that an inactive dog gains weight.

Joint support: omega-3 fatty acids, from fish or a fish oil supplement, have reasonable support for joint comfort and are among the better-evidenced additions for an older dog. Discuss anything else with your vet rather than assembling a shelf of supplements.

Water: everywhere. Multiple bowls, especially if mobility is limited. An arthritic dog will not walk to the far end of the house for a drink as often as it should.

On "senior" dog food

There is no regulated definition of senior pet food. The word means whatever the manufacturer decides it means.

In practice many senior formulas are lower in calories and lower in protein, which is precisely the wrong combination for a healthy older dog losing muscle.

Ignore the life stage on the front of the bag. Read the numbers on the back: crude protein percentage, and kcal per 100 g. Compare them against what your dog was eating before. If the senior version is materially lower in protein, it is not an upgrade.

Weight change is a symptom, not a phase

This is the section to act on.

Unexplained weight loss in an older dog is a medical sign until proven otherwise. Kidney disease, dental disease, cancer, diabetes and hyperthyroidism all present this way, and all are considerably more manageable caught early.

"He's just getting old" is the most expensive sentence in senior dog care. Old age is not a diagnosis; it is the period during which diagnoses become more likely.

Unexplained weight gain matters too, hypothyroidism, reduced activity from undiagnosed pain, or simply the same portions after activity dropped.

Weigh your senior monthly and write it down. A slow decline is invisible day to day and obvious in a column of numbers.

Practical adjustments that help

Raise the bowl for a dog with neck, shoulder or elbow arthritis. Eating from the floor requires a posture that hurts, and some dogs simply eat less rather than complain.

Warm the food slightly. Releases aroma, and helps a dog whose sense of smell has faded.

Smaller meals, more often, three or four rather than two, for a dog with reduced appetite or digestive comfort.

Non-slip mats where the dog eats. Feet sliding on tile is stressful for an arthritic dog and puts some off eating entirely.

Check the mouth, regularly. Dental pain rarely stops a dog eating; it makes them eat less, slower, and on one side. It is the single most under-diagnosed reason a senior "goes off their food".

Bloodwork, not guesswork

Senior dogs should have bloodwork at least annually, ideally twice a year for a large breed past eight.

It is the only way to detect kidney disease, liver changes, diabetes and thyroid problems before they produce symptoms, and it is the test that tells you whether protein restriction is genuinely indicated for your dog, rather than applied on a rumour.

The bottom line

Do not cut the protein. Ageing dogs lose muscle, and adequate good-quality protein is what slows it. Restriction is for diagnosed kidney disease, on a vet's instruction.

Adjust calories down, keep protein up, and read the numbers on the bag rather than the word on the front.

And treat any unexplained weight change as something to investigate rather than something to accept. Most of what gets written off as old age is a diagnosis that was available a year earlier.

A senior dog eating slowly, dropping food, or favouring one side is telling you about its mouth, not its appetite.