It frustrates me because he looks a little unhealthy to me but he is fed properly and I ride him almost everyday, he gets plenty of water and I just don't know what else to do. I was going to give the vet a call to come out and just give him a check up to see if there's something wrong that i'm not aware of or is that just unnecessary? I know because of his breed, that he will not have a lot of muscle no matter how much I ride him but I just don't know why he looks so hippy to me. My mom also thinks the same thing but then again, she is used to her quarter horse which is bulky and thick.

This is kind of a funny angle but to me his hip bones stick out a lot more than they should and his back bone is so high. I don't know if that is because he has high withers or what. I just don't want people thinking I don't take good care of my horse when I really do. It seriously bugs me a lot.
This is the only semi good picture I have of him that shows his hips and back. I'll try to take a few more tomorrow and post them since this one isn't very good and since it's at a funny angle. Also, sorry the picture is so big I just wanted it to be big enough so People could see easier.