my puppy when he poops it seems he is really trying and today he is not very hungry and i took him to the vet he said to try some mineral oil in his food. he is pooping but when he poops he will run and it will come out but it just seems like he is haveing to really try. i was putting some water in his dry dog food and he liked it at first and then didnt want it. he will eat from my hand but hasent from his bowl yet today. do u think he is constapated or just not hungry. the vet said it is ok for them not to want to eat one day but if it last for more then three he will have to be seen. what is a good wet food and how much do u give him. he is 5 months and 5 pounds?