No-Fillers Dog Food: What to Look For

At a glance

• Fillers are ingredients added to bulk out a recipe cheaply rather than for nutrition
• Common examples include cheap grain used purely for bulk, powdered cellulose, and low-value by-product meals
• A whole vegetable or seed included for what it adds is not a filler; the test is whether an ingredient earns its place
• Every ingredient in a Marleybones recipe is there for a reason, so all four meals are free from fillers

No-fillers dog food is made without ingredients whose main job is to bulk out the recipe cheaply rather than to feed your dog. Owners look for it because fillers add volume and cost little, but do little nutritionally, so a food without them puts more of each portion towards ingredients that actually matter. Every ingredient in a Marleybones recipe is chosen for what it contributes, which means all four meals are free from fillers.

What are fillers in dog food?

A filler is any ingredient used mainly to add bulk and cut cost, rather than for the nutrition it provides. Fillers make a bag go further and a recipe cheaper to produce, but they take up space that could go to meat or genuinely useful ingredients.

The word gets used loosely, so it helps to be precise. A filler isn't defined by what an ingredient is, but by why it's there. The same ingredient can be useful in one recipe and a filler in another, depending on whether it earns its place or simply pads the food out.

Are fillers bad for dogs?

Fillers aren't usually harmful in themselves, and most are perfectly digestible. The issue is what they replace. Every part of a recipe taken up by cheap bulk is a part not spent on meat or useful nutrients, so a food heavy in fillers can leave a dog needing larger portions to get the same nutrition.

For a dog with a sensitive stomach, some high-filler foods can also be harder to digest well, though that depends on the specific ingredient rather than fillers as a category.

Which ingredients are considered fillers?

There's no official list, but the ingredients most often described as fillers include:

• Cheap grains used purely for bulk, such as maize or wheat feed, rather than a measured amount of a named grain
• Powdered cellulose, essentially plant fibre added to bulk out the recipe
• Low-value by-product meals used to cut cost rather than for quality protein
• A large amount of a single cheap starch dominating the recipe

Just as important is what isn't a filler. A whole vegetable, a named seed, or a superfood included in a sensible amount for the fibre, protein or micronutrients it brings is doing a job, not padding the food out. The test is always whether the ingredient earns its place, not simply whether it's a plant.

How do you find a dog food with no fillers?

Read the composition list and look at what sits near the top, where ingredients are ordered by weight. A food led by named meat and whole, recognisable ingredients, each with an obvious purpose, is a good sign. The warning signs are a cheap starch high on the list, vague category terms like "cereals" or "derivatives", or bulking ingredients like cellulose. A fully named ingredient list, ideally with percentages, makes it easy to see whether everything is there for a reason, and the guide to dog food ingredients to avoid covers the other label terms worth knowing.

Is Marleybones free from fillers?

Yes. Every Marleybones meal is built only from ingredients chosen for what they contribute, so there are no fillers in any of the four recipes. Alongside named meat like chicken, each meal includes vegetables and superfoods such as quinoa, chia seeds and chicory root, all there for the fibre, protein and nutrients they bring rather than to bulk the food out. Every ingredient is listed in full, with a percentage for nearly all of them.

To match your dog to the right recipe, build their personalised Marleybones plan based on their age, size and needs.

FAQs

What counts as a filler in dog food?

A filler is an ingredient used mainly to add cheap bulk rather than nutrition. It's defined by its role in the recipe, not its name, so the same ingredient can be a filler in one food and a useful component in another.

Are grains fillers?

Not automatically. A measured amount of a named grain can provide energy and fibre, which isn't the same as filler. Grain becomes filler when a cheap one is used in large amounts purely to bulk out the recipe and cut cost.

Is rice a filler in dog food?

It depends how it's used. A sensible amount of named rice provides digestible energy and fibre. It only really counts as filler when it dominates a recipe as cheap bulk, leaving little room for meat or other useful ingredients.

Does Marleybones contain fillers?

No. Every ingredient in every Marleybones meal is included for what it contributes, so there are no fillers in any of the four recipes.