Heard a couple of things already, but one problem I encountered today...killed a falcon on Tsumani server, it respawned under a pack of wolves. When I tried to attack it, the game targeted the wolves and entered into battle. When I tried the falcon afterwards, my hero just marched on top of it and stopped, same as what happens when a yeti is unable to be attacked yet, or the time we had the bunny that couldn't be attacked (group photo...remember that? lol)

You can get more with a kind word and a 2x4 than you can with just a kind word.