Alas, he is a poor conversationalist, and he really resents the fact that you snuck in without knocking. With a malevolent sneer, he cries something in a strange language and stuffed Black Bear comes to life and attacks you.

[The Bear has a monster rating of 50. It gets 6D6+25 adds each time in combat. It also regenerates 5 hits of damage each turn, even if it isn't hurt. Keep track of its monster rating and adjust the bear's dice and adds correspondingly. For example, on the first combat turn you do 12 hits of damage to the bear, reducing it to a monster rating of 38. It regenerates 5, coming back to 43. On combat round 2, it would get 5D6+21 combat adds. On the other hand, if you had failed to damage it at all on the first round, it would have been monster rating 55 on the second round, or 6D6+27 adds.]

Fight the battle! The wizard's nice tidy chamber is thoroughly wrecked in the process. Do you kill the bear?
Yes!
No!!