He's been acting sluggish all day. Looks like he has no energy. He's eating and drinking though. He's been chewing on his toys but he looks like he is too weak to fetch them. I think maybe his stomach hurts, because he hasn't been eating much prior to today because he's been picky about his food. So today I tried to mix his food with milk. It worked but some one told me milk was bad for dogs and it gave him gas so I mixed his next meal with chicken broth. He ate half and now he is sleeping again. I wish he would get up and play. I'm scared he's sick. Please help yahoo, what could be wrong?