•Why it earns a slot
Why it earns a slot: London strips survival fiction to its rawest mechanism, a starving man out-waiting a starving wolf, then shows the trauma does not end when the food comes back.
A prospector abandoned by his partner in the Canadian Barrens starves, crawls, and finally strangles a dying wolf with his bare hands to survive.
This distillation is written from the freely available original, which is always the better read when you have the time: Project Gutenberg.