recoil, scratch, scatter, crouch, shake, quiver, claw, howl, hiss, mewl, hide, slither, pace, whimper, stampede, snarl, yowl, growl, whine, sense, bay, flee (to higher ground), cower, draw back, tremble, shrink, cock (ears), prick up its ears

recoil, choke, scatter, crouch, shake, snap, twitch, freeze, falter, quiver, knock down/over, jump, scream, quaver, charge, hide, bolt, start, stampede, panic, shy away, cower, tremble, shrink, transfix, blanch, pale, weaken, drain, wobble, take cover, flee, shout, gag, teeter, barrel, stop (in one's tracks), gasp, yell (for help), cry out, run (off/away), pitch (forward from one's hips), dive (for cover), hightail it, cringe, flinch, come undone, hyperventilate, vibrate, shiver, shudder, wince, go numb, back away/off/up, turn back/away, shit one's pants, wet oneself, twinge, quake, grimace, go to pieces, shake in one's boots, break into a sweat, dry up/out

hug, bounce, embrace, laugh, emerge, radiate, shine, abandon, smile, ring out, let out, blossom, bloom, flower, jump for joy, swing (arms), stride

scoot, split, skip, bolt, skedaddle, retreat, vanish, disappear, take off, abscond, skip town, flee, dash, escape, duck out, vamoose, turn tail, run away/off, run for it, cut out, scram, break free/out, slip away, cut and run, beat it, make a getaway, take to one's heels, take flight, head for the hills, get away