I considered myself lucky, outside of the amputation Guido (yep, that was his name) had only two emergency vet visits in 11 years.
One was for a GSD that attacked him at my house, requiring 14 stitches to his tender belly, and the first visit was related to him getting sick from eating to much fish (it's a long story).
When he was almost 9 years old he started to limp a little, I thought it was simply arthritis. He'd take a few steps and be fine, supposedly the cancer he had was supper painful... but he was tough, no doubt about it.
Basically a super low maintenance dog his entire life, or so I thought. Even after the surgery he was awesome and continued on like nothing ever happened, winters were getting tough as my driveway seems to be a sheet of ice most of the winter, and deep snow and the blister cold made it tough for him to get around outside.
Was he worth every penny, 100%. For me it's time to move on, had hoped to get an Akita this month, but that kind of fell thru. The search continues.
~g