Merrylegs’s complaint about being “mauled about” adds some humor to an otherwise very sad departure. The fact that Merrylegs and the other horses are so upset to lose James speaks to the strength of James’s relationship with the animals—this is the root of the horses’ trust in him. But note that it’s made very clear that while Joe is a good kid who wants to try his best, he’s not experienced. So he’s on the right track to becoming just like John and James—but until he has a few more years of training, he’s not a skilled horseperson yet.