How long will he be gone? I have actually experienced this with one of my dad's pugs. We were pug-sitting and while we paid lots of attention, Oobie was just so sad the whole time. He also wouldn't eat unless we hand-fed him and he just moped around. We watched him for about four days so I don't know if it would have continued or he would have perked up. We felt bad but we made sure that he was getting lots of attention and ate at least some food.