Ty positioned himself outside the bathroom, crouched into a spinging position and waited. Dustin pulled back the shower cuirtain and Ty pounced at him!
The two half-brothers thrashed around in the shower until Ty got a bit carried away and accidently nipped Dustin's hand. "OWWWWWW!!!" he screamed.
"It's OK!" said Ty "It's just me, Ty! I discovered I can transform myself too!"
"You bit me!" cried Dustin
"It's only a little nip." said Ty "A small tetnus and you'll be fine."
"You drew blood-" protested Dustin, looking at his hand. The bitemarks had healed, leaving a series of scars - but Dustin had bigger problems! His hand was growing hairier, the palms becoming pads and the nails becoming claws. The same thing was happening to his other hand, and to his feet too, whhich were also growing bigger.
The fur spread all over his body, with muscles rising up under them. Right before his eyes Dustin saw his face grow into a wolf's snout with sharp teeth. His ears grew bigger and more pointed too.
The changes complete, Dustin gave an involentary howl.
"Holy crap!" said Ty "I must have become a werewolf!"