i have a lab/beagle mix named bodacious after the bull in the primus song "the ballad of bodacious" that is exactly what you described. i've only had him 3 months and i have taught him to sit, shake with both hands, high five with both hands, high ten sitting and jumping, lay down, and roll over. he also has learned not to jump up on the counter, eat the cats food, or get in any garbages. he looks exactly like a 6 month old lab but he is about 15 months old and full size. he is so awesome, i love him. i have attached a picture of him. i would say check out www.petfinder.com to search, and then when you get to the pound or whatever spend some time with the dog to see how he behaves. good luck.