My dog managed to improve her concentration by only have dried food on her dinner plate, and instead work for the food which taste good as an reward. I think Cleo enjoyed training more when she only get treats as rewards , instead of some treat on her food as well. . I also tend to enjoy a good audio books better than a movie, since most book are better than movies. Most good sci-fi novels are almost never used to make an movie, and the move adaptation is always worse than the book. For instant the Harry Potter book series is a much longer and feature rich than the movies which cut out important aspect of the story.