Awesome Shiba Inu. I got one too -- 9 years old black and tan. He is bigger than most of the Shiba Inus out there. Most of the Shiba Inu I have seen are half the size as him, and the Akita Inu are double the size of him as well. I think that is because he is not inbred like 90% of the Shiba Inu in the pet trade are.
The only thing I hate about the Shiba Inu is people think they are lapdog that will listen to you. In my opinion? They are a lifelong puppies that need constant training and play less as they get older.