In the battle between animals. The squirrels shall rule the world:

Labrador loses to a squirrel

When Carl the labrador chased a squirrel into the woods, his owners' only concern was for his quarry.

But they should have worried about their dog. Because seconds later Carl re-emerged with the grey squirrel firmly clamped to his neck. [Telegraph.co.uk] [via Warren Ellis]

As my gnome warrior in WoW says, "Ya'know. Squirrels are deadly when cornered.