during the winter you can approach wolf with dried meat and get a low chance of him accepting it, so then you can leash the wolf it attempt to tame it, wearing wolf cape could improve the odds..
taming process must be finished during the winter, if succeeded the wolves will stay loyal to the person who did the taming, one person need to do the whole process
originally tamed wolves cannot be traded, they can breed and pups can be traded but there is a twist
originally tamed wolf can hunt with its master and gain own exp of sorts, improving its con, agi, str, then can join the master in fights, whenever master is attacked, wolf will react
if one were to breed wolves they would work in very similar way but would not be as fierce and loyal, perhaps they could have some stat cap or lowered stat gain, they could make more for cute puppies than lethal companions