The first ingredient is not the whole story.

Does the first ingredient really matter?

Less than the marketing suggests. On an EU label the ingredient list is headed “Composition” and, like everywhere else, it is ordered by weight as the ingredients go into the food - before cooking, and including water. Fresh meat can appear high in the list largely because it contains moisture that disappears during processing.

That does not make fresh meat bad. It means “first ingredient” is a descriptive clue about the recipe, not a complete nutrition score. A dry food whose first ingredient is a rendered meal can deliver more animal protein per serving than one that leads with fresh meat, because the meal has already lost its water.

What is ingredient splitting?

Ingredient splitting is listing similar fractions of one ingredient separately - peas, pea protein, and pea fiber, for example, or several forms of rice. Each entry lands lower on the list than the combined amount would, which can keep a carbohydrate source from displacing the meat at the top.

Splitting is legal, and sometimes the fractions genuinely serve different formulation purposes. But it is one more reason ingredient order alone is a weak ranking tool: two lists can describe very similar recipes and read very differently.

Are by-products bad?

Not automatically. The word by-product sounds like waste to humans, but under EU law the animal by-products allowed in pet food are Category 3 materials - parts of animals passed fit for human consumption at slaughter that simply are not destined for the human food chain. That legal category includes organ meats and other edible tissues, some of which are more nutrient-dense than muscle meat.

The better questions are whether the finished product is complete and balanced, whether the company has credible quality control, and whether the food fits your pet. Those answers do not live in a single ingredient name.

What counts as a “filler”?

There is no regulatory definition of a filler. Online pet-food arguments usually use the word to mean any ingredient the speaker dislikes - which is a claim, not a diagnosis.

Some carbohydrate and fiber ingredients provide energy, texture, stool quality, or specific nutrients. Some may be poorly suited to an individual pet. The ingredient name alone rarely tells you dose or digestibility, and those are the things that decide whether an ingredient is doing useful work.

What the ingredient list is actually good for

One EU-specific habit to know first: labels here may declare ingredients by category - “meat and animal derivatives,” “cereals,” “derivatives of vegetable origin” - instead of by name. That is legal, but named ingredients with percentages (“chicken 26%”) tell you more, and Snuffo treats that specificity as a transparency signal.

• Checking known allergens after a veterinarian has identified a true dietary trigger.
• Confirming protein sources and diet type.
• Spotting many tiny marketing ingredients that may add complexity without clear benefit.
• Understanding whether a flavor claim matches the product identity.

Read it the way Snuffo does: as one transparency signal among several, weighed after the complete-or-complementary statement and alongside the rest of the scoring inputs.