I will roll their attacks:
[HIT vs DC15 1d20+4=(13,17)][CON vs DC14 1d20+7=19][DMG 1d4+2=6]
The troll had 1HP, he's down. So make your moves and the cats will likely tear out his internal organs through his mouth when the wolves are down.
[Ashley] yeah, or something, so the troll is down again, and other bigglesworth will attack any wolf that's left.