The Collaborative International Dictionary of English v.0.48:

Goatherd \Goat"herd`\, n.
   One who tends goats. --Spenser.
   [1913 Webster]

WordNet (r) 3.0 (2006):

goatherd
    n 1: a person who tends a flock of goats [syn: goat herder,
         goatherd]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "goatherd":
   Gyropilot, automatic pilot, boatheader, boatsteerer, cattleman,
   cicerone, courier, cowboy, cowgirl, cowhand, cowherd, cowman,
   cowpuncher, coxswain, dragoman, drover, gaucho, gooseboy,
   gooseherd, guide, guidepost, guider, helmsman, herd, herder,
   herdsman, hogherd, horse wrangler, horseherd, mercury, navigator,
   pigman, pilot, pointer, puncher, river pilot, sheepherder,
   sheepman, shepherd, shepherdess, steerer, steersman, swanherd,
   swineherd, tour director, tour guide, vaquero, waddy, wrangler