Here are my 2.
Charlie 4 years old comes out with me all the time. He has only done 30 munros less than me.
Charlie at the top of Maol chean-dearg
Here is my other dog Barney. Just over a year and a half. But sadly he cant do any more munros as he has arthritis. In his front elbows.
Here is Barney at the top of Fionn Bheinn