Enrichment of bears and wolves enclosure goes wrong in Dutch zoo

Footage of the incident [beware: can be experienced as shocking] On 30 October 2018 bears attacked one of the wolves with whom they share their enclosure at Eindhoven Zoo (formerly known as Dierenrijk) in the Netherlands. The two species suppose to enrich each other's lives by interacting, but this was a level of interacting too much! It is not clear why the bears suddenly attacked the wolf. According to Dierenrijk officials the wolf accidentally got in the water while rough-housing with its mates, when the wolf got out of the water it was violently attacked by the bears - until death followed. Could this have happened in the wild I wondered? When animals are kept in relatively small confined areas - which most enclosures of zoological facilities are, and the bear-wolf exhibit at Dierenrijk is no exception - the frequency of the encounters between the species is much higher than in the wild. Moreover, in the wild there's more space to get out of each other's way - a wolf would never