Science-backed wet food, dry food and supplements, made sustainably in the UK. Powered by our FormulaBiotics™ blend of prebiotics, postbiotics and antioxidants to support gut health, vitality and long-term wellness.
Science-backed wet food, dry food and supplements, made sustainably in the UK. Powered by our FormulaBiotics™ blend of prebiotics, postbiotics and antioxidants to support gut health, vitality and long-term wellness.
More than 70% of your dog's immune system lives in the gut. Digestion, coat, energy, mood, all of it starts there. WITHIN is built around that idea, with FormulaBiotics™ at the heart of every recipe, from the first ingredient to the last.
Wet food. 70% named meat or fish. Chicken, salmon, turkey. Traceable, ethically sourced. Never meat meal & grain free.
Dry food. Freshly prepared chicken or salmon, whole oats and vegetables. No meat meal, ever. Vet approved across every life stage.
Supplements. Targeted chews for gut, joints, dental and calming. Every formula vet approved.
More than 70% of your dog's immune system lives in the gut. Digestion, coat, energy, mood, all of it starts there. WITHIN is built around that idea, with FormulaBiotics™ at the heart of every recipe, from the first ingredient to the last.
Wet food. 70% named meat or fish. Chicken, salmon, turkey. Traceable, ethically sourced. Never meat meal & grain free.
Dry food. Freshly prepared chicken or salmon, whole oats and vegetables. No rendered meal, ever. Vet approved across every life stage.
Supplements. Targeted chews for gut, joints, dental and calming. Every formula vet approved.
You won't find FormulaBiotics™ anywhere else. It's our proprietary blend of prebiotics, postbiotics, antioxidants, vitamins and minerals working together in every product we make. The result: better gut health, stronger immunity, healthier coat and more energy. Built in from day one, not sprinkled on top.
Prebiotics
Feed the good bacteria already living in your dog's gut. The foundation of a healthy microbiome.
Postbiotics
EpiCor® — backed by 14 clinical studies. Supports immunity, digestion and vitality from the gut up.
Antioxidants
Vitamins C and E. Combat free radical damage and support a healthy immune response at the cellular level.
Vitamins and Minerals
A complete micronutrient profile. Not the legal minimum, what a dog needs to thrive, not just survive.
"I bought this food for my spaniel because the recommended portion sizes were perfect for him. He absolutely loves the wet food, and the delivery was super fast too."
Mike Hughes
"A fast turn around certainly helps with orders. Next day in fact. Boxed and shipped with care and a great product that my dog loves."
Tim
"Super fast delivery and SUCH good dog food! My dog Poppy loves it and she can be a little fussy. I really like the fact the meat comes in recyclable trays."
Georgina
"My dogs love this food! Ordering was quick and simple and my order was delivered in perfect condition. Will definitely be ordering again soon!"
Jodie
"Swapped my dog over to Within a few weeks ago and he's absolutely loving it. Bowls are always empty and the delivery was really quick too. I've set up a subscription."
Izzy Kay
"Great product which all 3 of my dogs aged from 3 to 12 loved! Arrived very quickly also. Highly recommend."
Adam
Nutrition built around your dog
Complete meals and targeted supplements, designed to work together to support long-term health and wellbeing.
Wet food for gut health & vitality
Gently cooked recipes made with real meat, functional ingredients and FormulaBiotics™to support a healthy gut, immunity and everyday energy.
Kynosil® brings next-generation bioactive silicium to dog supplements - and WITHIN is one of the first UK brands to use it. One daily chew. Six powerful ingredients. Real, visible results.
Bone density that holds.
Kynosil® delivers silicium at 380x the absorption rate of standard silica - directly supporting bone mineralisation and structural strength where your dog needs it most.
Cartilage that keeps up.
With 150mg Glucosamine and 100mg Chondroitin in every chew, we're maintaining the cartilage that cushions joints and keeps your dog moving without restriction.
Tissue repair from the inside.
Collagen-rich Egg Membrane works alongside MSM to rebuild ligaments, tendons and connective tissue - supporting long-term joint resilience, not just short-term relief.
Mobility you'll notice in weeks.
MSM eases joint discomfort while Vitamin C fuels collagen production. A combination that delivers meaningful improvement in movement - typically within 4–6 weeks.
Kynosil® brings next-generation bioactive silicium to dog supplements and WITHIN is one of the first UK brands to use it. One daily chew. Six powerful ingredients. Real, visible results.
From expert insight to feeding moments - see how Within fits into everyday life.
Cleaner teeth. Lasting dental support.
Our Advanced Dental Chews combine natural active ingredients with science-backed nutrition to help support your dog's teeth, gums and oral microbiome. Designed for daily use, they help maintain a cleaner, healthier mouth and fresher breath.
A cleaner oral environment.
Ascophyllum nodosum seaweed and Citrus and Cranberry Extract work together to support the oral microbiome, reduce plaque build-up, and maintain healthier gum tissue - targeting the root cause of dental deterioration, not just the surface.
Supports healthy gums and the oral microbiome.
A healthy mouth starts with a healthy balance. Our blend of postbiotics, seaweed and botanical extracts helps support the oral microbiome and maintain healthy gums, helping to create the foundations for better oral health every day.
Naturally fresher breath.
Parsley and Peppermint are included as natural breath fresheners, helping to keep your dog's breath fresher while supporting their daily oral care routine. Rather than simply masking odours, our formula focuses on maintaining overall oral health for long-term freshness.
Complete oral care.
From helping to reduce plaque and tartar build-up to supporting healthy gums, the oral microbiome and fresher breath, our Advanced Dental Chews provide comprehensive daily support for your dog's oral health.
Scientifically formulated soft chews designed to work alongside our food, not replace it.
Advanced Joint Care Chews For Dogs | 120
Supports Flexibility
A supplementary chew formulated to compliment our Food for Dogs; with Kynosil® which supports collagen synthesis and bone mineralisation whilst optimising skeletal strength.
A supplementary chew formulated to compliment our Food for Dogs; with Kynosil®.
WITHIN isn’t built on trends or marketing claims. It’s developed alongside vets, nutritionists and formulation specialists who care about what goes into your dog’s bowl and why.
Emma Passman
Pet Nutritionist
"Every pet deserves nutrition that is thoughtfully formulated, scientifically balanced, and made with care."
Emma Passman is a qualified pet nutritionist who has worked across animal health and nutrition for over a decade. Her focus is digestive wellbeing understanding how the right ingredients, in the right combinations, support a dog's gut microbiome and long-term health. Don't just take our word for it. Here's what Emma had to say about WITHIN."Every p…
Emma Passman is a qualified pet nutritionist who has worked across animal health and nutrition for over a decade. Her focus is digestive wellbeing understanding how the right ingredients, in the right combinations, support a dog's gut microbiome and long-term health. Don't just take our word for it. Here's what Emma had to say about WITHIN.
"Every pet deserves nutrition that is thoughtfully formulated, scientifically balanced, and made with care. By placing nutritional excellence, digestive wellbeing, and ingredient quality at the heart of every recipe, pet owners can feel confident they are giving their companions the support they need to thrive. That's why I'm proud to support WITHIN."
Emma works closely with the WITHIN team to ensure every recipe goes beyond the minimum nutritional standard, reviewing ingredient quality, formulation balance, and the science behind FormulaBiotics™ before anything reaches your dog's bowl.
Dr Jason Aldiss BEM BVSc MRCVS
Veterinary Public Health Specialist
"Good nutrition should never be about marketing claims. It should be about science, quality ingredients and giving people confidence they are making the right choice."
Dr Jason Aldiss BEM BVSc MRCVS is a qualified veterinary surgeon with extensive experience in canine health and clinical nutrition. Every WITHIN recipe passes through his 11-point approval framework, covering ingredient provenance, manufacturing standards, nutritional balance and labelling, before it carries the vet approved mark. Don't just take o…
Dr Jason Aldiss BEM BVSc MRCVS is a qualified veterinary surgeon with extensive experience in canine health and clinical nutrition. Every WITHIN recipe passes through his 11-point approval framework, covering ingredient provenance, manufacturing standards, nutritional balance and labelling, before it carries the vet approved mark. Don't just take our word for it. Here's what Jason had to say about WITHIN.
"Good nutrition should never be about marketing claims. It should be about science, quality ingredients and giving people confidence that they are making the right choice for their dog's health. That's why I'm proud to support WITHIN."
Jason's involvement goes beyond a one-time review. He is part of an ongoing advisory relationship with the WITHIN team, ensuring that as the range evolves, across wet food, dry food and supplements, the science and standards behind it keep pace. Every claim made on a WITHIN product has been scrutinised and substantiated before it reaches you.
Read about the science behind our products and what makes them special.
Proven impact, powered by FormulaBiotics™
These results come from a 60-day randomised controlled study of 348 dogs. Half received our postbiotic blend daily. Half received a placebo. The difference showed up in the data and in the bowl.
Dogs in the supplemented group showed significantly higher levels of beneficial gut bacteria, supporting better digestion, stronger immunity and overall wellbeing. Compared with dogs fed the same diet without FormulaBiotics™.
1.7x
Greater gut diversity
A more diverse gut microbiome helps strengthen natural resilience and immune function. Compared with dogs not receiving postbiotic supplementation.
3.2%
More active and energetic
Dogs receiving the postbiotic blend showed measurably greater energy and performance over the 60-day study period. Compared with dogs not receiving postbiotic supplementation.
15%
More good days
Owners reported significantly fewer "off" days in dogs receiving the postbiotic blend — more energy, more enthusiasm, more of what makes a dog a dog. Compared with dogs not fed postbiotics.
How WITHIN works
Science-led nutrition. Straightforward choices. No complexity.
Step 1
Choose your food
Wet, dry or mixed feeding - built around gut health.
Complete recipes designed to support balanced nutrition from day one.
Step 2
Add targeted support
Select supplements to support joints, dental, calm or digestion.
Formulated to complement meals, not replace them.
Step 3
Flexible delivery
One-time purchase or subscribe and save.
Full control. Amend, pause or cancel anytime.
Step 4
Feed daily. Build wellness.
Consistency is where the difference happens.
Gut support, nutrient absorption and targeted care, working together.
From FormulaBiotics™ to feeding and supplements - here’s what you need to know.
How is WITHIN different from other dog food brands?
Within is built around one simple principle: proper science, properly applied.
Our recipes combine high-quality natural ingredients with FormulaBiotics™, a scientifically studied postbiotic designed to support a balanced gut microbiome - the foundation of immunity and vitality.
We work with veterinary and nutrition experts, manufacture to BRC standards, and test ingredients on the way in - not just the finished product.
The result? Food and supplements that are designed for long-term wellness, not just to tick regulatory boxes.
Can I mix wet and dry food together?
Yes. All Within wet and dry recipes are complete and balanced, making them suitable for feeding on their own or as part of a mixed feeding routine. Combining wet and dry food can provide variety, texture and flexibility while still delivering complete nutrition.
Are your supplements suitable alongside your food?
Absolutely. Our supplements are specifically formulated to complement Within food and provide targeted support for areas such as joint health, dental care, digestion and calming, helping you tailor your dog's nutrition to their individual needs.
Is WITHIN suitable for all dogs?
Our range includes products designed for different life stages and needs, including puppy, adult and senior dogs. Always check the individual product information and feeding guidelines to ensure you choose the most suitable option for your dog.
Is WITHIN vet approved?
Yes. Our recipes and supplements are approved by vets and developed alongside expert pet nutritionists to ensure they deliver safe, effective and balanced nutrition for dogs.
How long does delivery take?
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Why WITHIN works
WITHIN isn’t built on trends or marketing claims. It’s developed alongside vets, nutritionists and formulation specialists who care about what goes into your dog’s bowl and why.
Complete nutrition, built properly
Real meat. Functional ingredients. No guesswork.
Gut health at the core
With FormulaBiotics™ postbiotic support.
Developed with experts
Veterinary & nutritionist led.
Tested beyond the basics
BRC manufacturing. Ingredient testing on the way in.
Responsible sourcing
Traceable meat. Considered supply chain.
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Sign up and get 20% off your first order!
Vet & nutrition tips
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