I have a 16 month GSD male who is currently eating 5-6 cups a day of diamond naturals lamb and rice puppy food. He seems to still be just as skinny as before and he's been tested for everything under the sun, EPI, parasites, SIBO, giardia, salmonella, etc. All his lab values and exams came back perfectly normal. Has anyone else experienced this? Any tips? Is it just a phase maybe?