Top Dog

Chris was excited to have finally started working out, joining his muscle brute of a friend Ed for the last few months. It was mesmerizing watching his huge muscles work, moving under the skin with each rep. Chris was small, but was looking forward to one day maybe being that size.
In the gym locker room, Chris watched Ed pull out a drink he had never seen before.
"Got a new pre-workout" Ed said, tossing over the bottle. "Have some".
Chris took a moment to look at the label, the words "Top Dog Concentrate" written across the front. It had a small warning under it advising against drinking the whole container at once. Chris uncapped it, taking only a sip before nearly spitting it out. The flavor was disgusting, the taste of wet dog filling his mouth. It felt almost like he was drinking straight sweat, the fluid overwhelmed with salt. He wiped his mouth, handing it back immediately.
Ed laughed deeply. "Maybe next time" He said, before beginning to chug the rest of the drink.
Chris watched as the liquid disappeared from the bottle, seeing the level going down until it was empty. He didn't understand how Ed could have drunk something so repulsive, wondering if the warning he had seen on the label was accurate.
As Ed lowered the drink from his lips, Chris saw Ed's chest begin to heave, his breath turned into a heavy pant. A sheen of sweat began spreading across his huge body, his skin glistening, quickly filling the room with the smell of the beverage. Ed's eyes had glazed over, gazing off into the distance staring at nothing.
"You alright?" Chris asked, concerned.
Ed made no response. His eyes, now dark and beady, looked straight at Chris who took a step back. There was no light behind them. Ed stepped closer, grabbing Chris's head and holding it in place while looking deep into Chris's soul. Chris felt Ed's breath on him, heavy with the drink's smell as it filled his nostrils. He was frozen, unable to move paralyzed by the smell that seemed to flood his mind.
Ed began dragging his tongue over Chris's cheeks, wetting his face before moving to his mouth and spitting it full of his drool. Chris was panicking as he felt the drops of saliva moving onto his tongue before rolling down his throat, the taste of the drink exploding in his mouth as he felt its fumes replace the air in his lungs.
Chris couldn't control himself as he began panting, feeling sweat breaking out of his pores just like he had watched happen to Ed. He felt his vision narrowing until Ed was the only thing that took up his view, and he knew something in his head was changing as his thoughts grew simpler and emotions welled stronger inside him. All Chris could care about was Ed now, his mind unable to focus on anything else as the desire to submit to his Alpha was the only instinct left inside him.