From the picture you put up, he definitely looks like he has the typical Arabian ears, and thinner head. Not all Arabians are tall and willowy. I have a 4 year old papered Arab, and she's a 14.2 hand stocky girl. She has a very round barrel, round butt, and big chest. She happens to be bred from more of the sport horse type lines than the tall saddle seat type lines. He's very cute though. Love his coloring. As for his gaiting, Saddlebreds as well as a lot of Arabians these days are bred to gait so that could be what you are experiencing is a natural tendency to gait, because he may have been bred from lines that were good for saddle seat. Could you post some more pictures of him, I would like to see more of him.