Hi I have a 5 year old Pit/Shepard mix. When she was a puppy the vet put her on Eukanuba low residue because she was pooping a lot and throwing up alot. She was on the Eukanuba until about a year ago, then the vet told us that Eukanuba was merging with Iams and that they only sold Iams Intestinal low residue instead of the Eukanuba and that it was the same food. in the time Sandy has been on the iams she has lost weight, she was never chunky but she was a good weight i thought, now she just looks skinny to me. I talked to the vet about it afew weeks ago when we had her there and the comment from the vet was that she's very high strung . She's always been a bit high strung so why the weight loss after being on this food? Anyway, i want to take her off the iams but what is a good food to switch her to? she's an allergy dog, has always been on special food basically and i really don't know what would be a good food for her belly. my brother says to try wellness but i was searching around for info on wellness and found some people saying that their dogs throw up because it's heavy. any suggestions?