You mentioned that Clive needs as many calories as possible, and that he isn't eating much of the dry/wet....I ran into this with Tex. He WOULD eat cooked chicken, but, wouldn't touch his other special food..and what I came to realize was if I cut back on the chicken, he would get hungry enough to eat the other food. The treats/chicken doesn't have the full nutrients our kids need..so, keep that in mind when you feed him treats....