Why Pet Food Labels Matter More Than You Think
Standing in a pet shop aisle — or scrolling through the hundreds of options on Zooplus — with a bag of kibble in hand, you may have noticed that the back panel is dense with text, percentages, and unfamiliar terms. That information is not arbitrary. In Europe, every pet food label is governed by EU Regulation EC 767/2009, a binding legal framework that dictates precisely what manufacturers must declare, in what order, and in what format. Understanding the label is the single most reliable way to assess what you are actually feeding your pet.
This guide walks you through every mandatory element, explains what the numbers really mean, and highlights the red flags that separate a genuinely nutritious product from clever marketing.
The Legal Framework: EC 767/2009 at a Glance
Regulation (EC) No 767/2009 on the placing on the market and use of feed for food-producing animals — as adapted for companion animal food — sets the minimum labelling requirements across all EU member states and, via retained law, continues to influence the UK market post-Brexit. Any pet food sold legally in Europe must comply with its provisions. The regulation sits alongside broader feed hygiene rules under EC 183/2005 and is supported by guidance from FEDIAF, the European Pet Food Industry Federation, whose nutritional guidelines provide practical benchmarks that responsible manufacturers follow voluntarily.
Complete vs Complementary Food: The Most Important Distinction
The very first thing to look for on any label is whether a product is described as complete or complementary. EC 767/2009 makes this mandatory, and the difference is fundamental.
- Complete food is formulated to meet all of a pet's daily nutritional requirements on its own. If fed as directed, no additional food source is needed. The WSAVA (World Small Animal Veterinary Association) Nutrition Guidelines recommend that complete foods be the dietary foundation for healthy dogs and cats.
- Complementary food — including treats, mixers, broths, and toppers — does not provide a balanced diet alone. It must be combined with other foods. Feeding complementary products as a sole diet is a common and serious mistake.
The designation must appear prominently on the label. If you cannot find it, treat the product with caution.
Analytical Constituents: Reading the Numbers
EC 767/2009 requires that all complete pet foods declare four core analytical constituents, expressed as percentages of the product as sold:
- Crude protein — the total nitrogen-based content, including protein from meat, fish, dairy, and plant sources. It does not distinguish between digestible and indigestible protein, so context matters.
- Crude fat (crude oils and fats) — the total fat content. A higher percentage is not inherently better; appropriate levels depend on species, age, and health status.
- Crude fibre — the indigestible plant material. Useful for gastrointestinal health in some formulations, but very high fibre can dilute energy density.
- Moisture — water content. Wet foods typically show 75–85%, dry kibble around 8–12%. Comparing a wet and a dry food on a raw percentage basis is meaningless without converting to a dry matter basis: divide the nutrient percentage by (100 minus the moisture percentage), then multiply by 100.
Some labels also voluntarily declare crude ash (the mineral residue after incineration), which reflects the overall mineral load. Ash levels above 8–9% in dry food may indicate high bone content or lower-quality ingredients, though this is not a universal rule. FEDIAF guidance advises that ash declaration, while not always mandatory, supports greater transparency.
Ingredient Listing Rules
Ingredients must be listed in descending order by weight as incorporated, which means the ingredient present in the greatest amount appears first. EC 767/2009 permits manufacturers to group ingredients under category names — for example, meat and animal derivatives or cereals — rather than listing every specific source. This is legal and common in mid-range products.
Premium manufacturers typically opt for full individual ingredient disclosure, naming specific meats (e.g., fresh chicken, 40%), which allows more meaningful evaluation. Be aware that a named ingredient listed first may still be largely water weight; for instance, fresh chicken is roughly 75% water, so on a dry matter basis it contributes less protein than its position might suggest.
- Look for named meat sources high on the list.
- Be sceptical of vague category descriptions if the price point suggests a budget product.
- Added sugars, propylene glycol, and artificial colourings serve the consumer's eye, not the pet's health.
- Preservatives are necessary for safety; naturally preserved products (mixed tocopherols, rosemary extract) are acceptable alternatives to synthetic options such as BHA or BHT.
Feeding Guidelines and Energy Statements
EC 767/2009 requires feeding guidelines to appear on the label, expressing the recommended daily amount based on the animal's body weight. These are starting points, not prescriptions. Individual caloric needs vary with age, activity level, reproductive status, and metabolic rate — factors that a single table cannot capture.
The regulation also allows — but does not universally require — an energy declaration in kilocalories or kilojoules per kilogram. The WSAVA Nutrition Guidelines encourage owners to seek this figure and use it, alongside an assessment of body condition score, to avoid overfeeding. Many brands selling on platforms such as Zooplus include metabolisable energy values on product pages even when the physical label omits them, making online shopping a useful research tool.
EU-Specific Claims and What They Mean
Marketing claims on European pet food are regulated but can still be misleading without context.
- "Natural" — under FEDIAF guidance, this term should only apply to ingredients of natural origin that have not been chemically modified. There is no EU-level legal definition of natural for pet food specifically, so usage varies.
- "Grain-free" — indicates the absence of cereal grains, but the product may still contain other starchy carbohydrates such as lentils, potatoes, or peas. Evidence linking grain-free diets to dilated cardiomyopathy in dogs is under ongoing review; the WSAVA advises consulting a veterinary nutritionist before switching.
- "Hypoallergenic" — not a legally defined term in the EU. Products marketed this way typically contain novel or hydrolysed protein sources, but the claim does not guarantee clinical efficacy for a specific animal.
- Health claims — broad health claims (e.g., supports joint health) must not be misleading under EC 767/2009's general honesty provisions, but specific therapeutic claims are reserved for veterinary prescription diets regulated separately under the Veterinary Medicines framework.
Putting It All Together: A Practical Checklist
Before placing a product in your basket — whether in a physical store or on an online retailer like Zooplus — run through the following checks:
- Is the food labelled complete for your pet's species and life stage?
- Are the four mandatory analytical constituents declared?
- Is the ingredient list specific, with named meat or fish sources at the top?
- Does the moisture content allow a fair nutritional comparison with other products?
- Are the feeding guidelines accompanied by a caloric value?
- Do any claims appear credible and substantiated, or are they vague marketing language?
Reading labels takes practice, but the investment pays off. EC 767/2009 gives European pet owners a foundation of transparency that many other markets lack. Combine that legal baseline with FEDIAF's industry guidance and the WSAVA's independent veterinary nutritional standards, and you have everything you need to make genuinely informed decisions about what goes into your pet's bowl.