Back a quarter of a century ago or so, we had a stray shepherd mix named princess.
After getting new carpet, she got sick. she baptized every inch of that carpet. She went off her feed, and started to get thin. We took her to the old guy up the highway from us. He was ancient then and what is scarier is, he is still in business.
The guy was afraid of dogs. Good job to have. But anyway, he looked at Princess and told us to take her home and feed her Chicken Soup. (Yes, this was WAY before Chicken Soup for the Dog lovers soul. It was before the original book Chicken Soup for the soul was written.)
Anyhow, we went home, opened a can of Cambells Chicken Noodle soup, and put it in her dish. The poor pup mouthed it, barfed again, and left it in her dish.
A week later all her ribs were showing. She was going to die. My parents had six kids, no money, and both of my parents were going to college and they had no money whatsoever, but they dragged the dog back to this vet.
He looked at her and said that he would check her for worms, but did not want to while she was so sick, so he gave her a shot to make her more active.
We put her back in the car. Mom drove her to the other, the new vet in town.
The man was a young guy, he saw her and started shaking his head. We told him her story, and what the other vet had done. He was ticked off. He collected stool, gave us wormer, told us to get her off the generic food, explained about the AAFCO and 100% Balanced nutrician, and told us to keep her out of the garbage.
She got better.
They did an emergency spay on her a few months later. And when she was 18 months old we found a lump on her abdomen, and took her in. It was an aggressive form of stomach cancer. They removed it, but said she would likely live no more that a year, maybe a year and a half.
He must have gotten it all because we ended up putting her down at 14 years.
Every time she came in after that, the doctor would check and check her stomach, no reoccurance.
Over the years, there has been no reason to change vets.