Future episodes of Expedition Wild will focus on the wild wolves of Yellowstone; a journey with Casey trekking through Yellowstone during two key seasons — winter and spring — documenting every living thing he encounters; and a one-hour special with the complete history of his relationship with Brutus. will be sharing sneak peeks all weekend. MORE >>

You will see everything from bald eagles, wolves and deer, to wild turtles, baby ducklings and other animals. One of the things that I love the most about watching NatGeo Wild is that we always discover amazing places and crazy nature that we didn’t know about before! Who knew our country was so diverse in just one region? 11 p.m. MORE >>

Seamus McGraw tells us he has to kill deer in his section of Pennsylvania because “with no predators to speak of—the wolves were wiped out centuries ago and the last mountain lion in the state was killed more than 70 years ago—the responsibility for trying to restore a part of that balance fell to me.” Animals suffer when killed. STEPHEN F. MORE >>

Wolves eat sheep. To the Editor: Re “ Animal, Vegetable, Miserable ,” by Gary Steiner (Op-Ed, Nov. 22): Mr. Steiner might feel less lonely as an ethical vegan—he says he has just five vegan friends—if he recognized that he has allies in mere vegetarians (like me), ethical omnivores and even carnivores. Jean Kazez Dallas, Nov. Lawrence S. MORE >>

And it may have been for reasons other then what we would like: A new study of dogs worldwide, the largest of its kind, suggests a different answer, one that any dog-owner is bound to find repulsive: Wolves may have first been domesticated for their meat. MORE >>