[Susan]

Hi
has your dog been checked out for acid reflux? as we age with don’t make as much Hydrochloric acid in stomach, this is called Hypochlorhydria (Low Stomach Acid) & this can cause acid reflux…
Dogs become fussy cause the foods they are eating are causing bad acid reflux, start feeding “lean cooked” white meats – turkey breast, chicken breast & lean pork cooked meat, boil Sweet Potato, Google “Judy Morgan Pup Loaf” I make into rissoles & freeze & add sweet potato, Sweet Potato soothe the stomach & bowel so after your dog vomits thaw a piese of sweet potato mash on plate & serve warm & dog will lick off plate, my cat & dog love sweet potato..

Buy tin Salmon in spring water look for the tin salmon with teh lowest sodium/salt% drain spring water put salmon in air tight container put in fridge, boil Sweet Potato pieces & freeze in sandwich clip seal plastic bags put in freezer, if Sweet Potato pieces stick together when frozen just hit sandwich bag on sink & sweet potato pieces will separate. Take out as needed..
Feed 4 small meals a day, for lunch get a bowl add 2-3 spoons of salmon & add 2-3 small pieces of boiled sweet potato, it thaws in microwave if frozen -15sec, mix with salmon & serve, warm not cold, your dog will love this..

Look at “Canidae Pure Meadow” Senior kibble, get a small bag from pet shop, Canidae has palability guaranteed money back so if your dog wont eat it take back get refund.
Canidae Pure Meadow is small size kibbles & has everything needed for an senior dog, only serve about 1/4 a cup with some salmon & sweet potato mixed together mixed thru the kibble….

Also you said your dog vomites talk to your vet about taking an ant acid reducer like Zanatc or Pepcid to begin with, if you see your dog seems better when takes Acid reducer 20mins before Breakfast & Dinner then the ant acid reducer isnt working no more talk to your vet about putting your dog on something stronger an acid blocker – “Omeprazole” or I use 20mg “Pantoprazole”
Trial for 3 -4 days then stop & see was there an improvment in those 4 days with your dogs eating while taking the ant acid blocker??
You can buy at chemist, best given first thing in morning once a day 20mg, can be given before or after food but best as soon as dog wakes up then feed breakfast.. but you can not just be stop acid blocker once dog has taken for more then 21 days, needs to be reduced slowly if been on the acid blocker more then 21 days..