How realistic is the depiction of wolves in Cormac McCarthy’s The Crossing?

Answer by Oliver Starr:

While I don't recall every aspect of McCarthy's description of the she wolf or her behavior, his eulogy was so moving that even just recalling it makes my eyes well up.  It is spectacularly accurate and is among my favorite pieces of literature.  Everything I love about wolves is captured here:

“The eye turned to the fire gave back no light and he closed it with his thumb and sat by her and put his hand upon her bloodied forehead and closed his own eyes that he could see her running in the mountains, running in the starlight where the grass was wet and the sun's coming as yet had not undone the rich matrix of creatures passed in the night before her. Deer and hare and dove and groundvole all richly empaneled on the air for her delight, all nations of the possible world ordained by God of which she was one among and not separate from. Where she ran the cries of the coyotes clapped shut as if a door had closed upon them and all was fear and marvel. He took up her stiff head out of the leaves and held it or he reached to hold what cannot be held, what already ran among the mountains at once terrible and of great beauty, like flowers that feed on flesh. What blood and bone are made of but can themselves not make on any altar nor by any wound of war. What we may well believe has power to cut and shape and hollow out the dark form of the world surely if wind can, if rain can. But which cannot be held never be held and is no flower but is swift and a huntress and the wind itself is in terror of it and the world cannot lose it.”

Cormac McCarthy, The Crossing

How realistic is the depiction of wolves in Cormac McCarthy's The Crossing?