Sorry you have to go through that. Unfortunately all dog lovers need to, wish we didn't. Most recent was our 15 year old Yellow Lab. Not looking forward to dealing with that with our two Aussies, one turned 9 today and the other turns 1 year later this month. I'll enjoy the time I have left with them, they add a lot.
Two of our GSP's are buried under a Birch tree on the shore of Lake Michigan inside a National Park. Whenever we're in the area I visit them and always leave laughing to myself over some memory of their mischief.