Dry senior dog food
Dry food labelled for senior dogs is generally adjusted for a slower metabolism and ageing joints, with fewer calories per bowlful than an adult recipe and, often, added support for joints and digestion. It suits most dogs from around seven years old, though the right time to switch depends more on your individual dog than a birthday.
What actually changes in a senior recipe
Calorie content is usually the biggest difference. Older dogs tend to be less active than they were as adults, and a senior recipe is generally formulated with that lower energy need in mind, which helps guard against the gradual weight gain that catches up with a lot of older dogs on an unchanged adult diet.
Many senior recipes also include added glucosamine or similar joint-support ingredients, and some use a slightly softer kibble that is gentler on teeth that have seen a lot of chewing over the years. None of this replaces a vet's advice for a dog with a diagnosed joint or dental problem, but it is a sensible general direction for an ageing dog.
When to think about switching
There is no fixed age at which every dog needs to change food. Large breeds often benefit from a senior diet earlier, sometimes from around six years old, because they tend to age faster than smaller breeds, while a small or toy breed dog might not need the switch until nearer ten.
Watch your dog rather than the calendar. A noticeable drop in activity, gradual weight gain on the same amount of food, or stiffness getting up after resting are all more useful signals that a senior recipe is worth considering than any specific birthday.
Reading the label
Look for a food that states it is complete for senior or mature dogs, rather than one simply marketed with an older dog on the packet but formulated the same as the standard adult recipe. The ingredients and guaranteed analysis panel will show whether calorie content and any joint-support additions are genuinely different, not just the label.
If your dog has a specific condition such as kidney disease or diabetes, a general senior food is not the same as a diet formulated for that condition, and a vet is the right person to advise on that rather than the wording on a bag.
Making the switch
Introduce a new senior food gradually, mixing it in increasing amounts with the current food over a week or so, the same as with any diet change. This matters more with older dogs, whose digestion can be a little less forgiving of a sudden switch than a younger dog's.
Keep an eye on weight and body condition over the following weeks rather than assuming the new food is working simply because your dog is eating it. A dog who continues to gain weight on a senior recipe may need the amount fed adjusted, which is worth discussing with your vet if you are unsure.
What we stock
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.

Forthglade Cold Pressed Natural Turkey
Cold-pressed turkey kibble for dogs from 2 months, soft enough to mix with water for young pups
£45.99

Forthglade Cold Pressed Grain Free Salmon
Cold-pressed grain-free dry food for dogs, built on fresh and dried salmon
From£16.99

Forthglade Cold Pressed Grain Free Duck
Cold-pressed grain-free duck food with fruit and botanicals, in two bag sizes
From£16.99

Forthglade Cold Pressed Grain Free Chicken
Cold-pressed grain-free chicken food with fruit and botanicals, in three bag sizes
From£16.99

Forthglade Complete Meal Lightly Baked Turkey
A lightly baked complete dry food, 50% turkey, for adult dogs of any breed
From£12.49

Forthglade Complete Meal Lightly Baked Chicken
A grain-free complete dry food for adult dogs, lightly baked and built on 50% chicken
From£12.49

Forthglade Cold Pressed Small Dog Turkey
Cold-pressed grain-free dry food for small dogs and puppies, built on turkey
£16.99

Forthglade Complete Meal Lightly Baked Lamb
A lightly baked complete dry food, 50% lamb, for adult dogs of any breed
From£12.49

Forthglade Cold Pressed Grain Free Turkey
Grain-free cold-pressed turkey kibble for dogs, gentle on sensitive stomachs
£69.69

Harringtons Puppy Turkey & Rice
Complete turkey puppy food with 30% protein and feeding bands by adult weight
£6.49

Harringtons Adult Dog Turkey Veg
Complete dry food for adult dogs with turkey, chicken and salmon oil, 21% protein
From£3.39

Harringtons Adult Dog Salmon & Potato
Complete salmon and potato dry dog food with 21% protein in a 1.7KG bag
£6.25
Common questions
- At what age should dogs switch to senior food?
- There is no single age that applies to every dog. Large breeds often benefit from switching earlier, sometimes from around six years old, while smaller breeds may not need it until nearer ten. Changes in activity, weight and stiffness are generally more useful signals than age alone.
- Is senior dog food lower in calories than adult food?
- Usually, yes. Senior recipes are typically formulated with fewer calories per serving to suit a less active older dog, which helps guard against the gradual weight gain that can build up if an ageing dog stays on an unchanged adult diet.
- Can a healthy senior dog stay on adult food?
- Some can, particularly smaller or still very active older dogs, and there is no rule that forces a switch at a certain age. Watching weight, energy and mobility is a better guide than assuming every dog needs a senior label once they pass a birthday.
- Does senior dog food help with joint problems?
- Many senior recipes include ingredients such as glucosamine that are generally associated with joint support, which can be a sensible general direction for an ageing dog. It is not a treatment for a diagnosed joint condition, and a vet is the right person to advise on that separately.
Related
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.