If it is a mid range special, try to be far range or just keep Beowulf airborne, he can't use Wulfshoot while in the air.
Let's test that theory, what moves can beat Wulfshoot?
Napalm Shot, Silent Scope, Gravity Slingshot, Sagan Beam, Pillar of Creation, Chair Hurdle, Airwulf, Ringlet Spike...