* Make sure to view it in full size... *
Here's another shot from Wildpark Knüll, and a rather rare one. They keep bears and European wolves together in one enclosure there, and this year, the both the bears and wolves procreated.
The bear cub up in the tree felt strong and continuously pestered the wolves until one of them finally had enough and chased it around until it fled and climbed up into a tree to escape.
After that scene, the wolf sat down and guarded the cub for a while, until the cub's father showed up and the wolf retreated.
While I'm not particularly a fan of keeping bears and wolves together, it seems to start working out alright there by now. However, as entertaining it is for humans to watch, it puts a fair amount of stress on both the bears and wolves. The wolves can retreat into another small area of the enclosure where the bears can't follow though.