My nearly year old Yorkie gets bored frequently. He gets at least 2 walks a day (1-3 miles each time), is taken outside numerous times daily, has tons of toys and a couple of brain games for dogs, gets playtime and trick training daily, and has bully sticks and slices to chew on. Since my husband and I are retired, he is not left alone very much. So if he is not engaged in these activities or napping, he goes in search of things to get into. (He is very good at that!) He also has a puppy friend close by whom he gets to play with frequently. Do you have any suggestions as to keeping him occupied? Is there such a thing as ADHD in dogs?