His bum is higher than his withers. I'm pretty sure he is still growing because he just turned 5 but isn't kinda late for him to still be growing? Will his withers eventually be higher? I really want to jump him but I don't think I really should start teaching him because I don't want him to get arthritis... oh and also he has this clicking in his hock when ever he walks and people told me it might be because his bum is putting alotta pressure on his hock so that's making it click? Another person said she had a horse that had that clicking its whole life and never meant anything...what do you think it is?