Any of the meat baby foods are worth a try. Some of them actually smell like dog food!
Have you tried this? Mirtazapine
Mirtazapine was created to treat depression in humans, but was found to be very beneficial in stimulating appetite in pets. It is usually administered to pets suffering from conditions like renal failure and stomach disease. In addition, it aids with loss of appetite or nausea associated with cancer treatments. Mirtazapine is sold per tablet and requires a prescription from your veterinarian.
Very interesting. I’ll ask the vet about it.
There is an appetite stimulant called Entyce (capromorelin) that was prescribed for Ella.
It was expensive ($15 dollars per dose) but I see it has come down in price. It did increase her appetite slightly, but it caused diarrhea (a common side effect).
I also have a friend with an old rescue golden (put up for adoption at 14 because his owners were divorcing). She takes him for chiropractic and acupuncture. It started every two weeks, but now it’s once a month. His gait and balance have improved and so has his appetite.
StG
When we had Luc and Shanni, Shanni was a real diva. Luc was a typical dachshund – scarfed his food and polished his bowl clean. Shanni was picky. My sister started hand feeding her, and that was it. Shanni wouldn’t eat unless she was hand fed. She thought she was the Empress of the Universe.
Sweetie is going for acupuncture every week. I took her (now deceased) companion Buddy for acupuncture, and it worked wonders for him. He would go in barely able to walk and come out prancing. I’VE had acupuncture and I never thought it did anything for me. <shrug> But clearly the placebo effect doesn’t apply to dogs. I’m not seeing such dramatic results with Sweetie, but she’s only had two treatments so far. The plan is every week for eight weeks, then every other week.
I get it from Kroger.
We don’t have Kroger any more. HEB, our local beloved benevolent grocery dictatorship, has driven out every grocery store except Wal-Mart, Whole Foods, and Trader Joe’s. Maybe Wally has it. I guess I could buy the small pouches of human salmon and put a little on the top for the smell factor.
You think salmon smells bad??? We’ve had digestive issues with Max, and our vet wanted him on a novel single protein – which is hard to find without any veg or fillers – and we ended up with tripe. Stinko!
But, hey, it’s working out well for him, so I just try to mouth breathe when I’m preparing his food.
Ooooo, tripe. 
I live in the land of menudo, so fresh tripe is pretty easy to find around here.
How do you prepare it? Cooked or raw?
It comes in a can. I do not want to be exposed to it more than I need to be. It’s cooked, but we nuke it since Max*** can’t eat a full can at once, so it stays in the fridge. Max lurves it, though, so I can hang.
***He only weighs 13 lbs.
Ahhh… canned tripe. You hope that when the power goes out that’s not the only thing left in the pantry.
I’m off to the store to buy ingredients for the Baby Food Dog Treats. I’ll look for canned tripe. Probably right next to the canned haggis.
Our power was out for about 9 hours last Wednes/Thurs. I would go hungry rather than eat that stuff. Ugh. 
Speaking of smelly… I just gave her half a can of no-salt-added sardines packed in water. She loved them (today, anyway…). Her doggy breath is plumbing new depths. (I drizzled the sardine juice over the other food in the bowl.)
I wonder if these sardines would do? Sweetie really liked them.
We’re supposed to stick to only one protein, so it would mean replacing the sardines for the tripe. Don’t know if sardines are better --should ask my vet!
Sweetie’s weight last week was 44.6. This week it’s 45.4, a gain of .8. Going in the right direction.
In Feb 2021 she was 46.7. In Aug 2020, she was 52.2. That was probably bordering on too heavy. Back in March 2019, she was 58 lbs, and that was too much.
Part of the problem with putting on weight is that I’m feeding her lots of high-quality protein and very few carbs. The carbiest thing she gets is all the grains in the satin fingers.
But she is looking more filled out, and her coat is glossy.
That’s great news, Thelma Lou! It’s so great to see a doggy improving.
I once had a piano teacher who put weight on his old dog, literally.
While the dog was lying on the carpeted floor on his side, this guy would kneel (gently) on the dog, eliciting grunts of apparent satisfaction from the beast. He referred to this as “grunting” the dog.
The dog adored him. Go figure.