Factual error: The wolves in this movie must be some sort of mutant super wolf. North American Grey wolves are not lion sized killing machines. They are typically smaller, by weight, than an average German Shepherd.
Factual error: The river that Ottway jumps into is filled with water from snow runoff, and as such it is barely above freezing temperature. Under those conditions, most people might have a few minutes to live before hypothermia and death. When Ottway gets out of the river, he isn't even shivering.
Suggested correction: This is a follow-up question for this entry and not a correction, but since we can't comment on entries, this is how I have to do it. Ottway has been in the freezing Alaskan wildness for at least a couple days at this point, so his body's core temperature would have gradually dropped in that time. With that in mind, is it possible he could have emerged from the river without being cold enough to shiver? Wikipedia even lists the symptoms of moderate hypothermia as "no shivering, increased confusion."