Just to hopefully lighten up your day....
One of our senior rescue pugs, Teddy, had decreased appetite about a month ago, very unusual for a pug. He is 15, pretty old for a pug, but we are not yet ready to just wait it out. Trip into vet, blood tests, x-rays, ultrasound etc and all seems pretty normal considering his age. Average life span for pug is 13. Vet has no good advice except to "keep him comfortable".
3 more days of no food at all, told hubby we are losing him, and either euthanize or we could try some prednisone. Gave him 5mg, and 3 hours later he gobbled up all his dinner and was prowling around for more. Next 3 days gave him 2.5mg, still eating every meal. Reduced to 1mg/day 10 days ago...still eating and starting to regain some of his weight and strength.
Hubby now understands a little bit better why I spend hours on the computer looking at recipes! When I prowl around the kitchen, I now have company, Teddy is right at my heels. One good side effect of that darn pred.