When we were at my favorite campsite high in the Colorado mountains, our Black Dog and I played games together. This "youngster" kept leaping right out of my camera frame because he was so pumped to play!
After 12 years of playing these games with me, he still shakes with excitement when I invite him to play!
In his intense enthusiasm, he also knocked me over a couple of times, not slowing down as he got close to me and my camera. In his defense, I don't think that he saw me due to his near-blindness. He also broke into song a few times.
His joy is contagious. Playing with him is so uplifting.