WordNet (r) 3.0 (2006):

bell the cat
    v 1: take a risk; perform a daring act; "Who is going to bell
         the cat?"

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "bell the cat":
   affront, beard, bite the bullet, brave, brazen, brazen out,
   confront, court danger, defy danger, face, face the music, face up,
   face up to, flirt with death, front, go for broke, meet,
   meet boldly, meet head-on, play Russian roulette, play with fire,
   run the gauntlet, set at defiance, speak out, speak up,
   stand up to, tempt Providence