Heyo! Wolf here!
Quite frankly, me and me chums don't give a fiddler's fart if you lot go suddenly extinct next week. As a matter of fact, friend, you humans can all just drop dead right now and, well, we won't even shed a tear!
We've heard the news in the wind about our cousins over in Ukraine: they seem to be doing fine for all your race's stupidity in the nuclear department, so I suspect we'll do okay here too!
Your electric grids and industries don't do us any favours now, and the sooner you all drop dead the better. Sure, there may be some local brush fires and so forth, but we're good runners! You won't catch a wolf so easily!
And, ah, the old web o' life! Yeah, no worries there! What with no busy-body ranchers to fly up in the air and kill us with their guns, we'll be feasting like kings!
For a time...
All in all, friend, don't you worry about us one bit! When you lot are snuffed and gone, we'll be right as rain! Sure, there'll be some tough times as prey populations level off, but we're survivors. You know how it is (or you would know if your race hadn't abandoned the Wild Life): the weak die and the strong survive. The survivors will make some new pups and in their time will die as all living things do. Wolves will go on, though, and so will sheep and goats and cows and wildcats and geese and chickens and all the rest. And I daresay all the better for lack of humanity.