"This is stupid, Dean," Sammy hissed, glancing down at his brother as they walked through the forest together, the full moon high in the sky, bathing the lush park in its ethereal glow, "You can't pass for a German Shepherd."
Dean glared up at him, amber eyes glowing in the light cast by the moon. He was down on all fours, plodding along beside his brother in an attempt to blend in that wasn't really working.
"A poodle, maybe," Sam amended, "but not a Shepherd."
Dean nudged Sam's leg with his nose strong enough to nearly topple the younger hunter over. Sam responded by reaching down and shoving Dean's shoulder, temporarily throwing him off balance. Dean reached up with one paw-like hand and pushed against his brother's hip. Sam nudged him with his leg.
"Stop it, Dean," he scolded, "we're looking for something, remember?"
Dean pretended not to hear and shoved him again. Sam responded with a hard push that actually sent the older man down. He stopped his stroll and looked down at his brother, who was laying on his side in the grass, glaring up at Sam with a feral glint in his eyes.
Sammy took a stumbling step backwards, away from the werewolf, as Dean pounced, wrapping clawed fingers around Sam's shoulders and sending them both rolling end-over-end down a hill.
They came to a stop at the bottom of the slope, and Sam found himself, for the second time in his life, pinned by a couple hundred pounds of incredibly pissed werewolf. Dean growled low in his throat, pulling back his lips to reveal a set of wickedly sharp teeth, and Sam closed his eyes, leaning away from the inevitable attack.
He'd thought his brother had such good control, could handle the violent instincts and urge to kill, but he had been wrong. His father had been right. Dean was a monster. He couldn't be trusted. He-
Sam's thoughts were interrupted as something wet slid up the side of his face. He snapped his eyes open to see Dean grinning down at him, tail wagging in delight.
"Did you just lick me?" Sammy shouted, disgusted, as he pushed Dean off and started wiping slobber off his face, "dude, that's…" He trailed off, staring at Dean, who was gazing off into the trees, body rigid, ears perked up.
"What is it?" Sam asked, climbing out from underneath his brother, "did Timmy fall down the well again? You'd think he'd stop doing that after a while, huh?"
Dean ignored his brother and ran off through the trees. Knowing that it had to be pretty important for Dean to let the Lassie joke slide, Sam followed. He crashed through the trees behind his brother, only slowing when he saw the hulking shape of the wolf in front of him.
He approached the edge of the wooded area and peered out between the trees to see what had captured Dean's attention. In a grassy area just beyond the line of trees, two men stood. The taller of the two had a strong hold on the shorter one and was staring deeply into his eyes.
"That's our vamp," Sam whispered, making to break cover, "let's go."
Dean grabbed his arm and pulled him back into the trees, whimpering.
"What?" Sam asked, fighting to get out of the strong grasp, "what is it?" Dean pointed toward the men, specifically toward the shorter of the two. Sam squinted to see any discernable features on the silhouette and gasped when he finally made out the dark hair, stern face, graying stubble, and ragged clothing of his father.
"It can't be. How'd he find us?" Dean shrugged and released his brother, pointing first to Sam, then their father. The younger man nodded, understanding. Dean pointed to himself, then the vamp. Another nod.
The brothers broke cover, running toward the two figures. The vampire saw them and dropped his victim, who crumpled to the ground. Dean chased after him through the park, while Sam checked their father for signs of life. Unfortunately, he was still breathing.