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Thanks you for saving that poor lost little boy. He is probably howling because he wants back in the house or room that you are putting him out of. Without giving him an exam, I am unable to tell you if he is Ok or not but if he ate and is otherwise acting normally, he is likely just missing his family. The sores will heal with time as long as he does not lick at them but he may need antibiotics to help prevent infection depending on how much of his skin is affected and how deep the stores are. If you can find a no kill shelter, they can treat him until his family is found or until he can be found another home. You may also try a rescue organization, these are networks of foster families that will care for dogs that do not have homes until permanent homes can be found. A shelter can also scan him for a microchip in case he has one and this can help to locate his family.
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