Canagan
Cat Food Chicken (Grain-Free)
Dry✓ Complete dietCrude protein 34 %
4.9Editorial ratingFair value
5.0 Rakuten reviews
≈$42 ≈$3/100g
Is Grain-Free Cat Food Necessary? Grains and Allergies in Practice
Updated: September 18, 2026 ·
Grain-free is a popular claim, but it is not something every cat needs. Without looking at what replaced the grain, the change may not deliver what you expected. Here is what to weigh.
Grain allergy is not the common case
The proteins most often reported in feline food allergy are beef, dairy and fish — animal sources. Grain can be a trigger, but it is not the first suspect. If symptoms are present, the cause is identified by a vet-supervised elimination diet, not by guesswork.
Look at what replaces the grain
The grain is usually replaced by legumes, potato or other starches. That means carbohydrate does not disappear. Grain-free does not automatically mean low-carb, so read the ingredient order.
When it is worth choosing
It is a sound choice when a vet has confirmed a grain-related problem, or when you want a higher share of animal protein. Absent a specific issue, being a complete diet matters more than being grain-free.
Frequently asked questions
Will grain-free stop the diarrhoea?
It helps if grain was the cause, and not otherwise. If it continues after the switch, the food is probably not the issue — see a vet.
Why does it cost more?
The replacements usually cost more than grain. Whether you can sustain the price is a legitimate part of the decision.
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Adult 1–6 Indoor Cat Chicken (Dry)
Dry✓ Complete dietCrude protein 33.2 %
4.5Editorial ratingGreat value
5.0 Rakuten reviews
≈$15 ≈$1/100g