My name is Patch!

We were given Patch for Christmas. He is a cute little Jack Russel terrier. He has a lot of energy....too much for my husband and I. We are older and are having a hard time holding on to him when we take him out to potty. He pulls hard on the leash and trys to chase the chickens. He needs someone to take some time with him and train him. He also needs an adult only home. He is not good with kids. He is crate trained. I also need to make it clear that Patch needs an experienced person to take him. While he is good natured most of the time he also will occasionally get aggressive. He will turn from being friendy to all of a sudden aggressively growling and lunging at us. Someone needs to try to figure out what is triggering this action. I'm sad because most of the time he is such a sweet little dog but I can't keep him. Please only respond if you are experienced with handling dogs with behavioral issues.