[All right. That's not good. McCoy stops, hands held at his sides, and decides for non-confrontational. (Because he's pretty sure he'd end up on the losing side of any sort of confrontation here, judging by the flash of teeth.) There's a thrill of fear up his spine, but he's learned (through hard-won experience) to keep it from showing too much.
no subject
Definitely there, though.]
I can take a few guesses.
[Giant teeth, gaping maws...]