The only shock there to be had is the way in which the films are all contrived.
Eagles do not hunt wolves. Wolf remains have never been found at the nests of eagles. No one has seen a Golden Eagle attack a wolf or found wolf remains in the digestive systems of any Eagle ever in all of North america. If you go to Yellowstone though, you will see Golden eagles line up to get a meal at the wolf kill sites. And they do not challenge wolves over the matter. A 12 lb bird , even with great talons, is simply not a good match for a 100 -- 140lb canine that can rip the hide off of a bull elk with its claws alone. If Golden Eagles were superior in killing abilities to wolves, they would attack them routinely, but their instincts tell them it's a really really bad bet. Golden and Bald eagles will fight defensively and that's probably what happened in this case. And now and then an eagle will go stupid and make a really dumb gamble. The collie could have killed the bird and no doubt would have even if it sustained serious injuries. Almost never does a Golden Eagle attack any animal period that weighs more than 40 -50 lbs and when they do it's usually something they can easily seize from above with little risk of injury -- like a young deer.