hmmm Stiles who is just so undeniably prey-like. Derek notices first, ofc, his big brown eyes, long neck, lithe and lean body made for running. He's like a deer and Derek can't deny the pull to hunt. He's a born werewolf, it's an instinct he can't help.
He knows that Peter felt it too, but the man always liked to play with his food. Scott, being bitten and also friend with Stiles since they were in footie pajamas, has a harder time consolidating his newer instincts with their history. He has no idea why Stiles is setting his teeth on edge when he's sprawled out on the couch, belly up, exposed. Its not arousal, but he feels like he has to do something. He goes for a run and then meets up with Allison. He doesn't mention it to anyone.
Erica sees it too, but she can get over it for the most part. Boyd too, can mostly ignore it. Isaac has a harder time, but tells Derek and gets some breathing exercises. He tells him the desire to hunt will eventually turn into a desire to protect, the longer him and Stiles are pack. And for the most part it does, but every once and while during practice, Stiles will take off running and he has to tamper his urge to chase.
Derek's instinct to hunt does turn into a desire to protect, as he knew it would. But a wolf protecting a deer is still a wolf in the end and sometimes he just wants to sink his teeth in.
Stiles notices something, he's not stupid, the small flash of eyes when he runs at practice. Scott tensing up when he relaxes, Erica and Boyd giving him small hungry glances. Derek's possessive hold, watching the others watch him, almost like he's protecting him from the pack. He's sure one day he'll figure it out
