The past few weeks, our dog has stopped showing interest in his food. However, he comes running when he hears us getting his food ready, jumps and spins around all excited when he sees us carrying his bowl to where he eats. When I set it down, he sniffs it, sometimes takes a bite or two, and walks away. We feed him taste of the wild, pacific stream. He's been on this food for several months, and has always loved it. He still shows great interest in his treats, and gobbles them up right away. My assumption is it's not a loss of appetite due to a health issue as he still gets excited about food. But he's the first dog we have owned so I really don't know how to recognize a loss of appetite. Is it possible this last bag of food was just a bad batch?? Or do dogs just get bored of their food...? Any advice or experience would be great!