My name is Rocky!

We got Rocky at about 9 weeks old and he is currently 6 years old. I am wanting to re-home him for a couple of reasons. First, we just don't have time to take care of him and give him the exercise and attention he deserves and second, we will be moving to a different state soon and can no longer afford to take care of him. Rocky is normally a mellow dog and has gotten a long with cats in the past. He is aggressive towards other dogs on walks but would probably get along with them with the proper initial meeting. He is shy/timid around new people but warms up quickly. Rocky loves to be around people and I have to stay in sight and hang around while he eats. He pulls while on walks, but I have always made him stop and sit before crossing streets. He is pretty good at it and he also shakes and then say other paw and he will give you the other one. He is not keen on baths. I feel bad and believe he is depressed because he is in the backyard all day with no stimulation. Please help