answered question 11/13/2010 I Picked Up A Friendly Stray Thin Emaciated Dog. He Was So Thin You Could See His Ribs Very Easy. Went To Vet He Said Need To Make His Stomach Swell Up Very Fast Like A Balloon. WHAT COULD GIVE THE DOG TO DO THIS? Um, my dogs a jack russel and she was very thin because she chases birds,m and we were concerned about her, we took her to the vets and they gave us this food that makes them fat, I can't remember what it's called, but it worked.