He is going to be 9 years old next month- hard to believe! He hasn't changed much at all. I will say his energy level has increased since we moved to the country. He delights in chasing the cats, and running up and down the hills on our walks, playing with my nephew, and rolling in fresh horse shit. It's every dogs dream really. ;)
We did have a bit of health scare a few months ago- he was losing weight and was lethargic. The vet ran a full blood panel, but couldn't find anything. He's back to normal though so not sure what that was about. In fact he's put all that weight back on. lol
Hopefully he remains just the same as always for many more years!