I remember that two of the wolves dropped dead before reaching Sorrow's End. So a couple of Wolfriders were mountless when they reached Sorrow's End, unless they had saved some of the pack wolves on the way to the Troll's Caverns. Off the subject, in the novelization Strongbow kills a lizard in the desert, and divides it between Rainsong, Newstar and Dart (Wing isn't weaned yet.) I guess the two wolves were still alive, or else their carcasses would have been divided up. Treestump once swore "by all the wolves I've ridden." I can't imagine how many wolves that might have been.