Sandcats of Rhyl — Robert E. Vardeman

Spacepedition!

Nightwind and his cyborg companion were an unlikely team by galactic standards, but they shared a fierce drive for independence and adventure. When they heard about the lost civilization, and its untapped treasures, they wasted no time to search for it.

But Rhyl was a barren, unrelenting planet; covered with endless deserts, and deadly sciroccos. They were prepared for that hardship, but not for the beasts -- sandcats of Hell!