I have a sick pup who I've already taken to the vet two days ago. He started getting better and even eating and drinking yesterday then today he's not interested. I know he's depressed his sister just died. They have been current with all shots, wormer everything I don't understand why this happened to them my other two dogs are fine and he still has 3 more doses of medicine. I feel I need to be at the vet right when it opens tomorrow I really just need to know is there anything I can do tonight?