As dogs get older, their nutritional needs can change.

Some senior dogs slow down and gradually put on weight. Others lose weight or muscle, even though they’re eating the same food they’ve enjoyed for years.

You might notice your dog taking longer over breakfast, leaving a few biscuits behind or suddenly becoming more interested in drinking water.

Those changes are worth paying attention to.

I’ve been walking and caring for dogs around Finchley and Muswell Hill since 2011. Some of the older dogs I’ve looked after have remained surprisingly active. Others have needed shorter walks, more rest and adjustments to their normal routines.

The important thing I’ve learnt is that age alone doesn’t tell you what a dog needs.

And it certainly doesn’t mean every older dog should automatically eat less food, less protein or take a collection of supplements.

In this guide, I’ll explain what to look for when feeding an older dog, how to monitor their weight and appetite, and when a change in eating habits needs a vet visit.

For broader feeding advice, visit my Dog Food and Nutrition Hub.

Affiliate disclosure: This guide contains an optional Amazon affiliate link. If you make a qualifying purchase through it, I may receive a small commission at no additional cost to you. As an Amazon Associate, I earn from qualifying purchases. You do not need to buy any products to follow the advice in this article.

Key Takeaways

No single diet suits every senior dog.
Older dogs should eat a nutritionally complete diet appropriate to their health and individual needs.
Some senior dogs need fewer calories, while others may need support to maintain weight and muscle.
Age alone is not a reason to restrict protein.
Monitor body condition, muscle loss, appetite, chewing comfort and drinking habits.
Account for treats, chews and food used for enrichment.
Change foods gradually unless your vet advises otherwise.
Do not introduce supplements or change a prescription diet without veterinary advice.
Never dismiss sudden weight loss, increased thirst, or changes in eating habits as normal ageing.

When Is a Dog Considered Senior?

There isn’t one birthday when every dog becomes old.

A seven-year-old Great Dane and a seven-year-old Jack Russell are at very different stages of life.

Breed, size, genetics and individual health all influence how dogs age.

You’ll often see commercial dog foods labelled for dogs aged seven years and over.

But that doesn’t mean every dog needs to change their food on their seventh birthday.

A healthy, active older dog maintaining a good weight may continue doing well on their existing complete diet.

Another dog of the same age may have arthritis, dental problems or a medical condition affecting their nutritional needs.

The PDSA’s guide to feeding senior pets explains why older animals benefit from regular reviews of their diet.

My approach is to review what the individual dog needs rather than relying entirely on the age printed on the packet.

What Should You Look for in Senior Dog Food?

For most healthy older dogs, the starting point is a suitable, nutritionally complete food.

Look for the word “complete” on the packaging.

A complete dog food is formulated to provide the nutrients required when fed as directed and for the stated life stage or purpose.

A complementary food, on the other hand, is intended to be fed alongside other food.

Treats, toppers and some mixers fall into this category.

The British Veterinary Association recommends choosing a complete diet appropriate to your dog rather than relying on marketing claims.

When comparing food, I would consider:

Whether it is complete
Whether it suits your dog’s life stage
The manufacturer’s feeding guidance
Your dog’s current body condition
Their activity level
Whether they can chew comfortably
Any diagnosed medical conditions
Whether your dog enjoys and tolerates the food

Words such as premium, natural or holistic don’t automatically mean a food is better.

And expensive food isn’t necessarily more suitable.

If you’re unsure what the packaging means, read my Complete vs Complementary Dog Food Guide.

Do Senior Dogs Need Less Protein?

Not automatically.

This is one of the more common misunderstandings about feeding older dogs.

Protein provides the amino acids needed to maintain muscles and other body tissues.

As dogs age, some gradually lose muscle.

That can affect strength, mobility and their ability to manage everyday activities.

Reducing protein just because a dog has got older may not help.

The PDSA’s senior pet feeding advice identifies high-quality protein as an important consideration in senior diets.

However, that doesn’t mean you should simply buy the food with the highest protein percentage.

The overall nutritional balance matters.

Dogs with certain medical conditions may require specifically formulated diets.

For example, some dogs with kidney disease need veterinary-directed adjustments to protein and other nutrients.

Those decisions should be based on the individual dog’s diagnosis and veterinary assessment.

Don’t apply a medical dietary restriction to every senior dog.

Why Weight and Muscle Condition Matter

When caring for an older dog, I watch for changes in their overall shape.

Has your dog become rounder around the waist?

Can you feel their ribs differently?

Does their harness seem looser?

Are they losing muscle around their hips or back legs?

It’s easy to assume that a dog becoming thinner is simply part of getting old.

But unexplained weight loss deserves investigation.

The World Small Animal Veterinary Association’s nutritional guidance explains the importance of assessing both body condition and muscle condition.

These are related but different things.

Body condition

Body condition helps assess whether a dog has too little, too much or an appropriate amount of body fat.

Your veterinary nurse can show you how to assess it.

Muscle condition

Muscle condition considers whether a dog is losing muscle, particularly around the head, shoulders, spine and pelvis.

A dog may appear to be an acceptable weight while still losing muscle.

This is why simply watching the number on the scales isn’t always enough.

If your dog’s shape changes, ask your veterinary team to assess both.

Do Older Dogs Need Fewer Calories?

Some do. Others don’t.

A dog who has slowed down considerably may burn less energy than they did when they were younger.

If their food stays the same but their activity decreases, they may start gaining weight.

On the other hand, some older dogs continue to enjoy regular exercise.

Others develop medical conditions that affect weight, appetite or how the body uses nutrients.

I wouldn’t automatically reduce a dog’s food just because they are older.

Instead, I would look at:

Their current weight
Body condition
Muscle condition
Everyday activity
General health
Changes over recent months
Veterinary recommendations

If your senior dog is becoming overweight, ask your veterinary team about a sensible weight-management plan.

Simply reducing their normal food dramatically may also reduce important nutrients.

For more detailed advice, see my How Much Should I Feed My Dog? guide.

How Much Should You Feed a Senior Dog?

The feeding guide on the packet is a starting point.

It isn’t an exact prescription for every dog.

Two dogs weighing 15kg may require different amounts depending on their activity, health and the particular food.

I prefer weighing food rather than guessing with a scoop.

A scoop can look consistent while gradually becoming fuller.

Kitchen scales make it much easier to measure the actual quantity.

For example, if your dog’s agreed daily allowance is 240g, you might divide that between two meals.

But remember that the correct gram amount depends on the food’s calorie content.

You cannot simply transfer a feeding quantity from one brand to another.

If you’re switching food, use the new manufacturer’s instructions and veterinary advice where necessary.

Don’t forget treats

Treats, chews, training food and food used in puzzles still contribute to your dog’s daily intake.

PDSA recommends that treats should generally make up no more than around 10% of a dog’s daily calorie allowance.

You can read its guidance on treating dogs without overfeeding.

For some dogs, especially those on medical diets, your vet may recommend a different approach.

One simple option is to reserve part of the normal measured food allowance for suitable training or enrichment activities.

Should You Switch Your Dog to Senior Food?

Possibly, but there is no need to rush.

Senior dog foods are often formulated with different energy levels, fibre, protein sources or other nutrients.

They may suit some ageing dogs well.

Others continue to do perfectly well on an appropriate adult diet.

The decision should depend on what your dog actually needs.

I would consider discussing a change with your vet if:

Your dog’s weight is increasing
They are losing weight or muscle
They have developed a medical condition
Their activity has changed significantly
They are struggling to chew
Their current food no longer seems suitable
Your vet recommends a different formulation

Don’t assume a specialist food is automatically superior because it costs more.

And don’t change a veterinary prescription diet without speaking to the prescribing practice.

How should you change their food?

Unless your vet advises otherwise, introduce a new food gradually.

PDSA recommends a transition over roughly seven to ten days.

Begin by mixing a small amount of the new food with the old food.

Gradually increase the proportion of new food while reducing the old.

Watch for:

Vomiting
Diarrhoea
Appetite changes
Unusual discomfort
Changes in stools

If problems develop, contact your vet rather than repeatedly switching between different foods.

Wet Food or Dry Food for Senior Dogs?

Neither is automatically better.

Both wet and dry foods can provide complete nutrition.

What matters is choosing an appropriate product for your dog.

When wet food may help

Wet food can be useful for dogs who:

Find some dry foods difficult to chew
Prefer a softer texture
Need additional moisture in their diet
Are less interested in dry food

However, difficulty chewing should be investigated.

Changing to softer food may make eating easier, but it doesn’t treat dental disease.

When dry food may suit

Dry food can be convenient because it is:

Easy to weigh
Simple to store correctly
Practical for measured meals
Sometimes suitable for food-search activities

But dry kibble isn’t automatically better for dental health simply because it is crunchy.

If your dog has painful teeth, sore gums or difficulty eating, seek veterinary advice.

Can you soften kibble?

For some dogs, adding a little warm water can soften the texture and make the food smell more appealing.

Always check the temperature before feeding and discard uneaten moistened food promptly.

However, a sudden refusal to eat dry food can indicate pain or illness.

My How to Encourage Your Dog to Eat Kibble guide explains when simple feeding adjustments may help and when to contact your vet.

Appetite Changes in Senior Dogs

One thing I pay attention to when looking after older dogs is whether they approach their meals as usual.

A dog who normally rushes over for dinner but suddenly leaves most of it behind is telling us something has changed.

That doesn’t automatically mean something serious is wrong.

But I wouldn’t dismiss it as old age.

Possible reasons include:

Dental pain
Nausea
Changes in smell or taste
Medication effects
Stress
Reduced mobility
Digestive problems
Other illness

The PDSA’s advice about dogs not eating properly explains why appetite changes need attention.

Contact your vet if your dog’s eating habits change.

Seek help promptly for a dog who seems unwell, repeatedly vomits, struggles to swallow, or has stopped eating. Don’t wait for a full day if they have other worrying symptoms or a medical condition.

What if your dog has become fussy?

If your older dog has always been selective about food, you may be able to make simple adjustments.

But if their fussiness is new, establish whether a medical problem is contributing before repeatedly buying different foods or adding rich toppers.

Water and Hydration for Older Dogs

Always keep fresh drinking water available.

For a senior dog with arthritis or reduced mobility, the water bowl’s location matters.

A dog shouldn’t have to climb stairs repeatedly or cross a slippery floor to reach a drink.

Consider placing water in more than one suitable location.

I also watch whether my dog drinks more than normal.

Increased thirst can sometimes accompany medical conditions.

Tell your vet if you notice a sustained or significant change.

Don’t restrict drinking water to manage increased thirst unless your vet has given specific instructions.

Should Senior Dogs Have Smaller, More Frequent Meals?

Some older dogs benefit from having their daily allowance divided into smaller meals.

For example, a dog who struggles with a large breakfast may be more comfortable with smaller portions.

But no rule says every senior dog needs three or four meals a day.

If your dog has eaten twice daily for years and continues to do well, there’s no reason to change.

Dogs with diabetes, digestive conditions or other medical needs may require a specific feeding schedule.

Follow the plan given by your veterinary team.

Do Senior Dogs Need Supplements?

Not automatically.

There are products marketed for practically every aspect of ageing:

Joint health
Digestion
Skin and coat
Cognitive function
General vitality
Mobility

But a supplement isn’t automatically useful because it has a picture of a senior dog on the label.

Some products can interact with medication, duplicate nutrients or be unsuitable for particular health conditions.

If your dog has arthritis, cognitive changes or another medical problem, ask your vet which treatments or supplements have appropriate evidence.

I deliberately haven’t included generic senior joint supplements as affiliate recommendations here.

Their suitability should be based on the individual dog’s needs rather than an online shopping list.

Senior Dogs With Medical Conditions

Nutrition can play an important role in managing certain conditions.

However, general senior-feeding advice should not replace veterinary treatment.

Kidney disease

Some dogs with kidney disease require carefully formulated veterinary diets.

Protein, phosphorus, and other nutrients may need controlling depending on the individual condition.

Don’t add treats, supplements or homemade ingredients without checking with your vet.

Heart disease

Heart disease covers several different conditions.

Dietary recommendations may vary.

An older dog shouldn’t automatically be placed on a low-fat or low-sodium diet simply because they are ageing.

Follow the advice for their specific diagnosis.

Diabetes

Dogs with diabetes may need carefully coordinated food, meal times and medication.

Changing the feeding schedule without veterinary advice can interfere with treatment.

Pancreatitis

Dogs with a history of pancreatitis may need specific dietary management.

Don’t introduce rich treats or fatty toppers because your dog appears bored with their normal food.

Dental disease

If chewing becomes uncomfortable, your dog may need a dental examination and treatment.

Softer food can sometimes help with comfort, but it doesn’t remove the underlying cause.

For any diagnosed condition, your veterinary team should take the lead.

Can Food Enrichment Help Senior Dogs?

Yes, if the activity suits the dog.

I enjoy using simple enrichment activities, but I wouldn’t make an older dog work unnecessarily hard for every meal.

Some senior dogs enjoy sniffing for a few pieces of kibble.

Others prefer food in a normal bowl.

For a dog with painful joints, repeatedly bending down or pushing a heavy puzzle around may be uncomfortable.

Suitable activities might include:

A few pieces of food on a clean mat
A gentle food search at a comfortable height
A simple snuffle mat, if the dog doesn’t chew fabric
A lick mat containing suitable soft food
An easy food puzzle

Use part of their measured meal allowance where appropriate.

An optional enrichment product

For a dog who enjoys licking suitable soft food, a lick mat may be useful.

One option listed in my affiliate recommendations is the LickiMat Tuff Soother Pro.

View the LickiMat Tuff Soother Pro on Amazon UK (affiliate link, exact model and current listing require verification).

Supervise your dog and remove the mat if they start chewing it.

A normal bowl is equally suitable if that’s what your dog prefers.

For more ideas, see my Lick Mats for Dogs Guide and Gentle Brain Games for Dogs on Restricted Exercise.

Feeding a Senior Dog When You’re Away

Keeping a familiar routine is especially important when someone else is caring for an older dog.

When I house-sit, I follow the feeding instructions agreed with the owner.

I don’t introduce a new brand, change portions, or add supplements.

Before going away, leave written instructions covering:

Exact food and brand
Amount per meal, preferably weighed
Normal feeding times
Treats that are permitted
Foods that must be avoided
Medication instructions
Food allergies or intolerances
Where food is stored
Normal eating and drinking habits
Veterinary contact details

If your dog needs medication with food, explain the arrangement clearly.

For a multi-pet household, tell the sitter if the animals need to eat separately.

This is particularly important when one pet is on a prescription diet.

My House Sitting Service in Finchley is based around keeping pets in their familiar surroundings and maintaining their normal routines.

For older dogs, that can mean predictable meals, comfortable rest and walks adapted to their mobility.

My Senior Dog Feeding Checklist

Every few weeks, ask yourself:

Is my dog maintaining an appropriate body condition?
Have I noticed any muscle loss?
Has their appetite changed?
Are they drinking more or less than usual?
Can they chew comfortably?
Have meal times become longer?
Are they dropping food?
Has their activity level changed?
Am I weighing their food?
Am I accounting for treats and chews?
Have any medications changed?
Does their current diet still suit them?
Is there anything I should discuss with my vet?

If you notice a change, make a note of when it started.

A simple record of weight, appetite, drinking and behaviour can be helpful when speaking to your veterinary practice.

Frequently Asked Questions About Senior Dog Nutrition

What is the best food for a senior dog?

There is no single best food for every older dog. For most healthy senior dogs, start with a nutritionally complete food appropriate to their needs and monitor weight, body condition and appetite. Ask your vet for individual advice where necessary.

Should I switch my dog to senior food at seven?

Not automatically. Dogs age at different rates, and a food labelled for dogs aged seven and over isn’t necessarily needed by every seven-year-old dog.

Do senior dogs need less protein?

Not simply because they’re older. Maintaining muscle is important, and protein supports that process. Specific medical conditions may require dietary adjustments directed by a vet.

Should older dogs eat less food?

Some less active dogs may need fewer calories, but others may lose weight or muscle and require a different approach. Assess the individual dog rather than automatically cutting portions.

Is wet food better for senior dogs?

Wet food may suit dogs who prefer a softer texture or need additional moisture. Suitable complete dry food can also be appropriate. Neither is automatically superior.

Why has my old dog stopped eating their usual food?

Possible causes include dental problems, pain, nausea and other illnesses. Discuss sudden or persistent appetite changes with your vet.

Can I add chicken to my senior dog’s food?

A small amount of plain, suitable chicken may be acceptable for some healthy dogs. However, added food contributes calories and may not suit dogs with allergies or prescription diets. If your dog’s appetite has changed, finding the cause matters more than constantly adding extras.

How many treats can a senior dog have?

For most healthy dogs, treats should generally remain within around 10% of their daily calorie allowance. Dogs receiving therapeutic diets may need stricter arrangements.

Does my senior dog need joint supplements?

Not necessarily. Discuss any proposed supplement with your vet, particularly if your dog takes medication or has an existing medical condition.

How do I know if my senior dog is losing muscle?

You may notice changes around the head, shoulders, spine, hips or thighs. Your veterinary team can assess muscle condition separately from body weight.

Calm, Individual Care for Older Dogs in Finchley

Nutrition is only one part of keeping an older dog comfortable.

Their normal walks may need shortening. They might need longer to sniff, more frequent toilet breaks or a gentler pace.

Some dogs are still enthusiastic about getting out every day.

Others prefer a short local walk followed by a good rest.

I provide one-to-one walks for older dogs in Finchley and Muswell Hill.

There are no group walks, transport vans or collection rounds.

I can adapt the pace and routine to the individual dog and let you know if I notice anything concerning.

If your older dog needs care while you’re away, my overnight house-sitting service may also be suitable.

To discuss your dog’s needs, contact me through the website or send me a WhatsApp message.

About the Author

I’m Del Chambers, the owner of Finchley Dog Walker.

I’ve provided professional dog walking and pet care around Finchley and Muswell Hill since 2011.

My work includes caring for older dogs who benefit from slower walks, familiar routines and individual attention.

I hold an Ofqual Level 3 qualification in Canine First Aid and undertake continuing professional development in dog welfare, enrichment and reward-based handling.

I’m not a veterinary surgeon or veterinary nutritionist. My advice combines everyday experience with established veterinary and animal welfare guidance.

Veterinary and Affiliate Disclaimer

This article provides general information about feeding senior dogs. It is not a substitute for veterinary diagnosis, treatment or individual nutritional advice.

Older dogs with unexplained weight changes, loss of appetite, difficulty chewing, increased thirst, muscle loss or diagnosed medical conditions should receive appropriate veterinary assessment.

Do not change a veterinary prescription diet, medication schedule or medically recommended feeding plan without discussing it with your veterinary team.

This article contains an optional Amazon affiliate link. As an Amazon Associate, I earn from qualifying purchases. Product specifications, availability and suitability may change.

First published: 31 October 2021

Substantially updated: 1 November 2026