"Training usually costs money, yes, though sometimes one can barter..." Sam had certainly bartered lessons in equitation and horsemanship for lessons in other things, but now that he worked for Serena, he wasn't sure if he could do that. Probably not publicly, anyway. "Though you could probably find some work in town for however long you're here. Someone always needs something."
He frowned suddenly, then approached Mike. Putting his hand out in a fist for Mike's inspection, he let the sleigh horse take his scent without fear that he would bite off a finger. Sam patted his neck, then looked over his shoulder before looking at Wolf.
"Uh, don't tell anyone I did this," he said, pulling out a hoof pick out of his pocket and kneeling down beside Mike's leg, putting pressure on his fetlock until he raised his hoof obligingly. "These hooves need trimming, but most importantly... there. If you don't keep the hooves clean, Mike might get thrush and then he could go lame if you're not careful."
He dug around expertly with his tool, working from heel to toe, knocking out a hidden stone before he stood up to pat Mike's shoulder again.
"He was favoring it," he said to Wolf by way of explanation. "He should be fine now."