SNOW SERPENT
“Without more warning than that, a long snowbank between that step and the next above reared up its nearest white end a dozen feet and hissed fearsomely, showing it to be a huge serpent with head a big as an elk’s, all covered with shaggy snow-white fur. Its great violet eyes glared like those of a mad horse and its jaw gaped to show slashing-teeth like a shark’s and two great fangs jetting a mist of pale ichor.The furred serpent hesitated for two sways between the nearer, taller man with flashing ax and the farther, smaller one with thick black stick.
The Mouser’s attention was fixed on a fur-wisped violet eye as big as a girl’s fist.
Hrissa looked down the monster’s gaping dark red gullet rimmed by slaver-swimming ivory knives and the two ichor-jetting fangs.
Fafhrd said, “A hot-blooded serpent, a snake with fur—it goes against experience. My father never spoke of such; I doubt he ever met ‘em.”
Fritz Leiber, Swords Against Wizardry