Feeding Wet and Dry Dog Food Together

Quick answer To feed wet and dry together, set the dog's daily calories, choose each food's share, then divide by each food's kcal per gram. A neutered 20 kg dog needs about 1,059 kcal: with 25% from wet food that is about 265 g of wet plus 209 g of 3,800 kcal/kg dry. Never add wet on top of full dry.

Many dogs eat a mix of wet and dry food. Owners like the variety, dogs often like the smell and the combination can help a fussy eater. The danger is arithmetic: wet food and dry food have very different calories per gram, and it is easy to add one on top of the other and double the intake. The solution is a simple calorie split. This guide shows the method with a worked example for a 20 kg dog, a table of mixes, the rules for toppers and tips for storage and switching. For the basics of feeding by calories, see how much to feed a dog.

Step 1: the daily calorie target

Start with the whole day’s energy. For a neutered adult, resting energy is 70 × weight ^ 0.75, and the daily target is 1.6 times that. For a 20 kg dog: 662 × 1.6 = 1,059 kcal. Intact dogs use 1.8 and inactive dogs 1.4. The Dog Calorie Calculator shows each. Subtract treats (up to 10% of the total) from the meals, so the food target for the example with treats is 953 kcal and treats are 106.

Step 2: choose the split

Decide what fraction of calories comes from each food. Common splits are 25/75, 50/50 or 75/25. The right one depends on your dog, your budget and what you want from each food. Your vet can advise if your dog has special needs.

Step 3: convert calories to grams

Divide each share by the food’s energy per gram. For the example (1,059 kcal) with a dry food of 3,800 kcal/kg (3.8 kcal/g) and a wet food of 1,000 kcal/kg (1.0 kcal/g):

Wet share	Wet kcal	Wet grams	Dry kcal	Dry grams
0%	0	0	1,059	279
10%	106	106	953	251
25%	265	265	794	209
50%	530	530	530	139
75%	794	794	265	70
100%	1,059	1,059	0	0

Look at the 25% row: 265 g of wet food is only about a quarter of the calories, but it replaces 70 g of dry. Mixed feeding therefore adds volume to the bowl, which many dogs enjoy. If you add 265 g of wet food to the full 279 g of dry, the dog gets 1,324 kcal, 25% too many.

Working with cans

Many wet foods are sold in cans or trays with the kcal printed per can. Suppose a can is 330 kcal. For the 25% share (265 kcal), you need 265 ÷ 330 = 0.8 of a can. The Dog Food Cans per Day Calculator does the arithmetic for cans of any size, and the Dog Wet & Dry Food Calculator splits the whole day.

Can size (kcal)	Cans for 265 kcal	Cans for 530 kcal
200	1.3	2.7
330	0.8	1.6
400	0.7	1.3

Cans cannot always be divided neatly. If you use half cans, cover and refrigerate the rest, and use within the time on the label.

The topper rule

A topper is a spoonful of wet food added to dry food to make it more appealing. It is fine, if you count it. The rule is simple: subtract the topper’s calories from the dry portion. For a dog on 279 g of dry, a topper of 50 g of wet food (50 kcal) means the dry drops by 50 ÷ 3.8 = 13 g to 266 g. If you do not subtract, the dog gains about 5% more calories each day, which over a year is a significant weight gain.

Mixing at one meal or across the day

You can mix in the same bowl or feed wet at one meal and dry at another. Both work. Mixed in one bowl, the dog gets the smell of the wet food on the dry. Split across meals, it is easier to measure and to adjust. A typical pattern is dry in the morning and a mix in the evening. Choose what suits your day and keep it consistent.

Matching nutrients, not just calories

Both foods should be complete and balanced for your dog’s life stage. If one is not, such as a topper marketed as a complementary food, the main food needs to carry the balance. Check the adequacy statement on each label. Comparing nutrient percentages across wet and dry needs a dry matter basis; see dry matter basis explained. If your dog has a health condition, ask your vet before mixing.

Cost

Wet food usually costs much more per 1,000 kcal than dry, so the split affects the bill. The Pet Food Price per 1,000 kcal Calculator helps compare. If a dog eats 25% of calories from a wet food at four times the price per 1,000 kcal, the food bill rises by 75%: 0.75 × 1 + 0.25 × 4 = 1.75 times the all-dry cost. Compute your own with real prices.

Switching and tolerance

If you are adding a new food, switch gradually over about a week, as in our guide to how to switch dog food. Watch stools and appetite. Some dogs get loose stools with more wet food, and some with a change in brand. If stools soften, go back a step, and tell your vet if it persists.

A weekly plan example

Day	Morning	Evening
Mon	Dry 140 g	Dry 70 g + wet 265 g (half of daily wet)
Tue	Dry 140 g	Dry 70 g + wet 265 g
Wed	Dry 209 g	Wet 265 g
Thu	Dry 140 g	Dry 70 g + wet 265 g

The pattern above is an illustration. The point is that the weekly total should match the target, and that the numbers on the sheet come from the calculation, not from guesses. Weigh the dog every week or two and adjust by about 10% if the trend is wrong.

Common mistakes

Adding wet on top of the full dry portion.
Forgetting treats.
Comparing grams instead of calories.
Using a topper that is not nutritionally balanced as a main meal.
Leaving wet food out.
Cutting dry food but not noticing that cost has doubled.
Not weighing the dog.

Frequently used splits and what they mean in the bowl

A table helps you see how common splits look at the bowl for a 10 kg neutered dog needing 630 kcal, with a dry food of 3,800 kcal/kg and a 300 kcal can.

Split (wet/dry by calories)	Wet kcal	Cans	Dry kcal	Dry grams
0/100	0	0	630	166
25/75	158	0.5	473	124
50/50	315	1.05	315	83
75/25	473	1.6	158	41
100/0	630	2.1	0	0

Half a can with 124 g of dry is a popular pattern, and the sum is easy to check. For tins or trays that cannot be divided neatly, round to the nearest half and adjust the dry food by the difference, so the total stays on target.

Why some dogs do better on mixed feeding

Owners report several reasons for mixing: a dog that is fussy about kibble may eat it with some wet food, an older dog with sore teeth may find it easier, a dog that needs more water may benefit from the moisture, and the variety may add enjoyment. None of these is a guarantee, and some dogs do equally well on one food. If you have a particular reason, such as a dental problem, ask your vet which approach suits your dog.

Switching to mixed feeding

If you are adding wet food for the first time, introduce it gradually over about a week. On the first day add a spoonful and reduce the dry by the equivalent calories. Increase over several days to your chosen split, watching stools and appetite. If you are replacing part of the dry food with a different brand of wet food, remember that the new food may have a different balance, and use the principles in how to switch dog food. Check both foods are complete and balanced for your dog’s life stage. If one is a complementary food, it should be a small part of the diet, and your vet can advise.

Using a mixed feeding log

A log shows whether your split works.

Date	Weight (kg)	Dry (g)	Wet (g or cans)	Treats (kcal)	Total kcal	Stool	Notes

Total the calories each day, compare with the target and note stool quality. Look at the weekly average, not single days. If the weight drifts up, reduce the dry portion by about 10% of the total. If it drifts down, increase by the same. This simple loop keeps a mixed diet in balance.

Mixed feeding for small and large dogs

For small dogs, small amounts matter. A 5 kg dog needing 374 kcal that takes a quarter of its calories from a 85 kcal pouch would eat 1.1 pouches (93 kcal), plus 74 g of 3,800 kcal/kg dry. A mistake of half a pouch is 42 kcal, 11% of the day. For large dogs, cans add up: a 40 kg dog needing 1,781 kcal on a half-wet diet needs 891 kcal of wet food, which is 2.7 cans of 330 kcal. Cost and storage become significant, so plan for them.

Quick troubleshooting

Problem	Likely cause	What to do
Weight rising	Calories above target	Reduce dry by about 10%; check wet portions
Loose stools	Change too fast, or too much wet	Go back a step; ask your vet
Refusing dry	Prefers wet	Reduce wet share gradually; do not increase calories
Leftover wet food	Portions too large	Smaller portions; refrigerate promptly
Bills too high	Wet is dear per 1,000 kcal	Lower the wet share

Quick summary

Set the daily calories first; subtract treats.
Choose the share from each food and divide by each food’s kcal per gram.
A neutered 20 kg dog with 25% wet (330 kcal can) eats about 0.8 can plus 209 g of 3,800 kcal/kg dry.
Never add wet food on top of the full dry portion.
Check both foods are complete and balanced and switch gradually.
Use the Dog Wet & Dry Food Calculator for your dog.

Frequently asked questions

How do I feed wet and dry food together?

Decide the daily calories, split them between the two foods, and convert each share into grams or cans using each label's energy.

Do I reduce the dry food when I add wet?

Yes. Wet food has calories too, so the dry portion must shrink by the same number of calories.

How much wet food replaces dry?

Match calories, not weight. A 330 kcal can replaces about 87 g of 3,800 kcal/kg dry food.

Can I use wet food as a topper?

Yes, as part of the calorie plan. Count its calories and subtract them from the dry portion.

Is mixing bad for digestion?

Many dogs do well on mixed feeding. If stools change, go back to one food and ask your vet.

How should I store the foods?

Keep dry food sealed and cool; cover opened wet food, refrigerate and use within the time on the label.

Can I mix brands?

Yes, but work out the calories from each and watch for stool changes.

Sources

Reviewed by the CalcuPaw Veterinary Review Team

Last reviewed 18 Oct 2026 · Meet the review team · This guide is general information, not veterinary advice.