Testing by states is rare for reptile diets. It is canned, hence the high moisture content, while Product B is a dry extruded floating pellet. Note that when comparing a canned and dry product, the levels of crude protein and other nutrients are lower for the canned food, because the moisture is higher. Ingredients are required to be listed in order of predominance by weight. The weights are determined as they are added in the formulation, including water.
Ingredients provide insight into the likely digestibility of a product.
Animal source ingredients for the most part are more digestible than plant source ingredients. So when evaluating a product for feeding a carnivorous monitor, for example, look for mostly animal source ingredients, say four of the first six on the label. Turkey Kelp meal Turkey giblets Bone meal Fish Note that Product A contains only two animal source ingredients whereas Product C contains five animal source ingredients in the first six. The reptile product lists water as the last ingredient, below even the vitamins, which is hard to interpret. A canned product needs much water for processing, and it is likely that water is the first or second ingredient, if considered by weight.