Right now there is the assassin wolf whose heart Siya is holding, and there is one other that's open for play. Wordsmith's post implied he had cut one of the wolves with his sword, and it may or may not have retreated. Still, they're Lupus Naturae fanatics - whether it's gone forever or not is entirely open for interpretation if you've an idea for Henry.

There is also the white wolf Zakhar, but Heroes has already said he's off limits at the moment.

The kamikaze wolves are outside the keep.