It was back in the day in 1921 that Frederick Banting and Charles H Best discovered insulin. Banting and Best injected the hormone into a diabetic dog and found that it effectively lowered high blood glucose levels to normal. So you can say that the dog received insulin by proxy.
I know this sounds like an excuse but I believe it or not, I was really going to write about this and then decided to peek at the Daily Prompts anyway. Hence this post and the quote below. Had to post a screenshot of the image as an embedded variation turned out too wide.
The Daily Prompt: Proxy