Sam smiled as he was touched, enjoying the attention he was getting.  He moaned appreciatively, a childlike smile on his face.  As Thorn placed the collar around his neck, he leaned into it, barely able to contain the feeling of closeness he felt to his captor.  His cheek brushed against Thorn's wrist as she closed the padlocks, his warm skin brushing against hers.  He barely even heard her words, feeling as if he understood her meaning just from her touch.<br/><br/>The boy began to breathe much faster as she embraced him, his cock coming to attention and throbbing.  When Thorn's fingers wrapped around him, his entire body seed to twitch, particularly his penis.  He gave a low moan that was almost a howl, rising in pitch as she stroked him harder and faster.  Sam was in a state of pure bliss, listening to Thorn talk about dinner, responding to her question with a high pitched vocalization that was definitely an intentional howl in the affirmative.<br/><br/>Sam barely suppressed a moan of disappointment as Thorn pulled away, heating up more as he was told to finish himself off.  He nodded enthusiastically and scrambled up onto the cot, curling into position to get to his task.  He was told not to make a mess, and his chain didn't reach to the drain, so he knew only one way he could fulfill that mandate.  His hands grabbed his thighs and pulled his face towards his cock, as he struggled to get himself into position.  He had done this before, in private, and felt he should be able to finish.<br/><br/>His lips, after much exertion, reached the head of his cock, and he wrapped them over the head, caressing it.  He pulled and struggled, inserting more and more of the shaft into his mouth until finally he had pushed the entire head inside.  He could not breathe, and his back hurt, but that meant nothing to him now.  His head bobbed over his cock as his muscles got used to holding the position, freeing a hand to run up and down the shaft.  Mercifully, he did not last long, and blew out a load of cum into his mouth.  He gingerly suckled himself, thrusting his head back as he swallowed his own seed, finding the tasted strange.  He pushed the head against his cheeks, flexing them as he tried to make sure all of the cum was cleaned out with his teeth.<br/><br/>He relaxed himself back into a normal curled up position, starting to feel strangely guilty as his arousal faded.  He began to recall vague memories of being a human being, of actually having a voice.  A cloud of depression began to roll in over his bliss, and he fought against it, simply enjoying the sensation of lying on the cot, being able to scratch his itches.  He rolled over, trying to draw security from the collar around his neck, from the will of Shadow and Thorn.  Finally, he found something to draw off of, as he realized he simply wasn't human anymore.<em>"Good Doggy."</em>He thought to himself as he patted himself on the head, taking deep breaths and letting his humanity flow out of him, simply focusing on being a purely physical being.<br/><br/>Finally, the words of his thoughts slipped away, as he slowly repeated mentally to himself.<em>"I'm a good doggy, I'm a good doggy, good doggy, good doggy, doggy, doggy, doggy..."</em>His eyes closed and he drifted off to sleep, dreaming simple dreams of food and obedience, feeling as if a weight had been lifted from his shoulders.  His eyes still held a spark of self preservation, yet they also had a frightful simplicity, a gaping hole where a person's cunning should be.