At the Grand Canyon National Park they told us that ravens are the only animal allowed at wolf kills; this is because they train wolf pups while the parents are off hunting so theyre recognized.
My guess would be that the ravens demonstrate effective scavenging behavior to the wolf pups. Interestingly, both wolves and ravens engage in observational learning of food acquisition behaviors [0].
I think most of us would assume that wolf pups have an innate scavenging ability; this is probably wrong.
