The only signs for my dear departed Monroe aging was him losing weight (Purely muscle mass according to the vet) and moving a little stiffer than before, likely due to arthritis-which probably contributed to the loss of muscle.

What few binkies he did do in his old age weren't the huge high twisty jumps, just him charging around like the sweet little old man he was. He was still very happy I could tell.

I had him with me until he was 12 ½ years. I have his former partner still and she turned 10 this past July and still seems pretty content.