Dry vs Wet Grain-Free Cat Food: The Honest UK Comparison
The best answer for most homes is both, in the right proportions — but which deserves the bigger share depends on your cat’s hydration, teeth, weight and your daily routine.
Where each format wins
| Factor | Dry food | Wet food |
|---|---|---|
| Convenience | Excellent — grazes, travels | Needs refrigeration, timed meals |
| Hydration | Low (~10% moisture) | High (~80% moisture) |
| Cost per calorie | Lower | Higher |
| Dental effect | Slightly abrasive at best | No abrasion; some claim worse |
| Palatability | Divides opinion | Wins with most cats |
| Overfeeding risk | High (easy to pour) | Lower (portion-bound) |
Our recommended split
Two measured wet meals for moisture and enthusiasm, plus a small weighed dry allowance for grazing, suits the majority of UK cats — especially indoor and senior ones. Cats with urinary or kidney concerns tip further toward wet.
Frequently Asked Questions
Is it OK to feed cats only dry food?
Cats can survive on dry-only diets, but chronic low-grade dehydration is a real cost over the years — particularly for male cats’ urinary health. Adding at least one wet meal daily meaningfully improves water intake.
Which is cheaper wet or dry?
Per calorie, dry wins by a wide margin. Per day of actual feeding with accurate portions, the gap narrows — overfeeding dry is the norm and inflates the apparent cost advantage.
Does dry food clean cats’ teeth?
Only marginally. Dental diets with engineered kibble have evidence; ordinary dry food offers little more than a mild abrasive effect. Brushing and dental treats do more.
Can I leave wet food out all day?
No — discard after 2–4 hours. Wet food needs scheduled meals, which is actually a feature for portion control.
