If I recall correctly, the way to compare wet and dry foods is to calculate the percentage of dry protein using the following formula: %protein/%dry = %protein by dry weight where %dry = 100 - % moisture. For example, a dry ferret food that is 36% protein and 10% moisture would be: 36/90 = 40% protein by dry weight. For the Evo duck canned food: 7.5/22 = 34% protein by dry weight. A little lower than some good quality ferret foods, but I would guess it would be fine as an additive to your duck soup recipe, or even as a treat by itself. Linda [Posted in FML 7123]