"Son, I want you to bite me. I want you to mix your new pure saliva into my blood and bring forth your first changed werewolf in the army that will be needed to take over the town."
Knowing that his father obviously knew what he was talking about, Stewie lunged forward and sank his teeth into the meaty flesh of his father, enjoying the taste of blood more since he slaughtered his sister. Having not expected it to hurt quite as much as it did, Stewie's father grimaced in pain, but was more excited that his birth right was upon him.
Stewie watched in wide-eyed fascination while his father transformed right before his very eyes. The mass of muscles that his father had before, quivered and spasmed as more mass slid onto the already massive muscles. Stewie's father smiled, showing off his already changing teeth; lengthening and sharpening to deadly fangs. Knowing that his son, now new alpha, would really get hard and flexed his muscles, which made Stewie's cock twitch. As his father grew, his clothes became very restrictive, but he made quick work of them now that his hands had changed into paws complete with razor sharp black claws. Now standing there naked, Stewie licked his maw at the site of his father's rock hard and bobbing cock, bounding from each heavy heart beat that coursed through his father's veins. As Stewie's father caught him, he just smiled.
"So, you a bit hungry for daddy cock huh?" His father said, while his voice grew more raspy and guttural.
Stewie just nodded while licking his chops a second time, noticing more of his father's transformation being underway. Quickly, dark reddish brown fur spread across his father's body, covering him from head to toe, while his head reformed and his face pushed out into a muzzle. Fur enveloped every portion of his body, except around his cock, which grew even thicker and larger than Stewie's own. Stewie didn't mind though, in fact, he thought to himself that it would have been a little awkward for the son to have the bigger member.
When the transformation was over, Stewie's father threw his head back and howled at the night sky, happy that he was how his line should have been since the beginning. His father walked over to Stewie, grabbed his son's muzzle lovingly and playfully, then gave him a deep kiss.
"So... do you like your old man's new look?"
Stewie's dad made a sweeping gesture over his entire body, getting Stewie to look him completely over, wolfish tail and all.
"Yeah dad, I have to admit I love everything about you even more!"
"You know, I don't want you to think of me as your dad anymore. We are brothers, each of us an immortal werewolf and I want you to call me by my given name... Rick."
"Alright da... er, Rick. What next?"
"I don't know Stew. You are the alpha, why don't you make the choice." Rick said as he squeezed the base of his more impressive cock, playfully wanting Stew to take the bait. All Rick could do was watch and wait.