Is wet food better than dry for cats?

Neither is universally better — it depends on the cat. Wet food has a major advantage in moisture content (70–80% vs 8–10% in dry), which matters for cats with urinary or kidney issues. Dry food is calorie-dense, convenient, and some cats prefer the texture. The WSAVA Global Nutrition Guidelines recommend choosing food based on your cat's individual health status rather than format alone.

Can cats eat dry food only?

Yes, provided they drink enough water. Cats on exclusively dry diets should always have fresh water available — ideally from a fountain, which encourages drinking. See our guide on improving your cat's water intake for practical tips. If your cat develops urinary tract issues on dry food, discuss switching to wet with your vet.

How do I calculate portions when feeding wet and dry together?

Calculate each component separately. If your cat needs 160 kcal/day and you want a 50/50 split: work out 80 kcal from wet food and 80 kcal from dry food, each divided by the food's kcal/100g. Use our feeding calculator and read our guide on how much to feed your cat for the full method.

Does wet food go off quickly?

Opened wet food should not be left out for more than 2–4 hours. Refrigerate unused portions in a covered dish and use within 24 hours. Dry food left in a bowl has a longer shelf life but should be stored in an airtight container to retain quality. Many cats prefer wet food warmed to room temperature — it releases more aroma.

Is raw feeding a good option?

Raw diets are controversial and not universally endorsed. The WSAVA and International Cat Care both note risks of nutritional imbalance and bacterial contamination (Salmonella, Listeria). If you choose raw, consult a board-certified veterinary nutritionist to ensure the diet is complete and balanced.

Wet, Dry or Mixed? Choosing the Right Food Format for Your Cat

The key difference: moisture content

The most practically significant difference between wet and dry cat food is water content. Wet food is typically 70–80% moisture; dry food is 8–10%. Because cats evolved as desert animals with a naturally low thirst drive, they often fail to compensate for low-moisture diets by drinking more. This makes moisture content a genuine health consideration — not just a marketing distinction.

Wet food

High moisture (70–80%) — supports hydration passively
Lower calorie density per gram — useful for weight management
Often more palatable for fussy eaters and seniors
Shorter shelf life once opened (2–4 hours at room temperature)
Generally more expensive per kcal than dry

Dry food

Low moisture (8–10%) — requires adequate drinking water
Higher calorie density — smaller portions by weight
Convenient for measured meals or puzzle feeders
Can be left out without spoiling (within reason)
Lower cost per kcal in most cases

When wet food has a clear advantage

Wet food is particularly beneficial for cats with:

Chronic kidney disease (CKD): Increased fluid intake helps flush waste products and slows progression. Most veterinary nephrologists recommend wet food as the primary diet in CKD cats.
Feline idiopathic cystitis (FIC) or struvite/oxalate crystals: Dilute urine reduces mineral concentration and crystal formation.
Low water intake: Some cats will not drink enough from a bowl. Wet food delivers water in a form cats naturally accept.
Dental problems: Cats with painful mouths or missing teeth may struggle to chew kibble.
Weight management: The lower calorie density means larger portions for the same kcal — a cat on wet food is less likely to feel constantly hungry.

For practical tips on increasing water intake alongside any diet, see our cat hydration guide.

When dry food works well

Dry food is entirely appropriate for healthy cats that drink adequately. It is also well-suited to:

Cats that graze rather than eating set meals (dry food does not spoil quickly in a bowl)
Multi-cat households with separate slow feeders or puzzle feeders
Owners who want to use kibble in food-dispensing toys or training — cats work for individual pieces more readily than for wet food

Mixed feeding: the practical middle ground

Many owners feed wet food in the morning — providing moisture and palatability — and leave measured dry food available in the evening. This approach has no documented downsides provided total daily calories are calculated correctly across both foods.

Calculating mixed portions. Add the kcal from the wet portion and the kcal from the dry portion separately, and ensure they total your cat's daily target. Do not just halve the original dry-only portion — wet food has a very different kcal/100g figure. Use our feeding calculator for daily targets and read the full method in our how much to feed guide.

Reading the label: complete vs complementary

Every commercially sold cat food must be labelled as either complete (nutritionally balanced as a sole diet) or complementary (intended as a topper, mixer, or treat alongside a complete food). Always ensure the primary diet your cat receives is labelled complete. Feeding only complementary food leads to nutritional deficiencies over time.

For guidance on interpreting nutritional panels and energy density figures, the WSAVA Global Nutrition Guidelines include a pet owner section with practical label-reading advice.

Wet, dry or mixed? Choosing the right food format for your cat

The key difference: moisture content

When wet food has a clear advantage

When dry food works well

Mixed feeding: the practical middle ground

Reading the label: complete vs complementary

Frequently asked questions