Get a copy of Rick Tomita's A New Owner's Guide to Boxers. Try used book sources such as Abe Books or Thrift Boks, because I think it's out of print. We give every new boxer owner a copy with their puppy as an "owner's manual." About diet, we have good luck with Wellness Complete Large Breed Puppy Chicken, Brown Rive and Salmon meal, topped with a homemade chicken stew of boiled chicken (legs and thighs work best), cooked with diced carrots sweet potatoes and zucchini. I'm wary of raw food because of all the recalls and the expense.Hello everyone, my 11 month is having more diarrhea as of late. He’s eating Royal Canin dog food and I’m starting to think that it’s upsetting his stomach now . He’s eating everything but not putting any weight at all either. He’s very active too. Right now I’m having him on chicken and rice to help settle his stomach . Any suggestions on another type of food. I have done purina pro plan and blue Buffalo in the past and those dis a number on his stomach.