URGENT! Please help!

Someone dropped off three little puppies on our road early Saturday morning. They ran off that night but one came back the next morning. I am guessing that the storm on Sunday morning scared them and they got split up. We took the one that came back and put him in our little pen with a box, a towel, food and water. He is not even barking! He seems so happy to just be somewhere. He is a very calm, cute, and sweet puppy. Maybe 2-3 months old, I am guessing. We can not keep him. He will be going to the shelter tomorrow. If any one is interested or knows anyone interested, PLEASE call me IMMEDIATELY at xxx-xxx-xxxx or xxx-xxx-xxxx.