How do I measure food when I mix wet and dry together?

A scoop of wet food typically has a fraction of the calories of an equal sized scoop of dry food, since wet food is mostly water, so an equal volume mix delivers far fewer total calories than an equal volume of dry food alone.

This usually means a dog fed a wet and dry mix by volume alone actually receives less energy than intended, though it can occasionally run the other way with very calorie dense wet foods.

Decide what portion of the daily calorie target you want from each food type, a common approach being half from each, then use each food's calories per 100g to work out the grams needed for that half.

For example, a dog needing 800 kcal a day choosing a half and half split needs 400 kcal from dry food, worked out at roughly 105g for a 380 kcal per 100g dry food, and 400 kcal from wet food, worked out at roughly 500g for an 80 kcal per 100g wet food.

Once you have calculated the grams for your usual split, write them down so you are not recalculating from scratch each time, and only reassess if you change brands or your dog's weight target changes.

Check body condition every two to three weeks as with any feeding plan, and adjust the total calorie target rather than the ratio between wet and dry if a change is needed.