We have a 3 month old teddy puppy who is very tired and lustless. He threw up about 3:00 this afternoon and Now he sort of gags a lot but nothing comes up. His nose is dry and really would rather just stretch out than be cuddled.. Was outside yesterday in the cold and snow, but comes in on his own when he got cold. Has 3 sets of shots already. Didn't finish his dinner and has not eaten anything since then.