How does the author use imagery in the novel, The Unicorn Sonata?

Imagery:

[Ko's] brown, triangular face was human, except for the pointed ears—really pointed, much more so than Indigo's—and the yellow goat eyes with their slit horizontal pupils. His legs were a goat's split-foot legs, just as the book had shown them, bending backward in a sharp hock where human knees would be. He was naked, his chest, belly, and legs alike covered with coarse dark hair, straight and matted with dirt; but the hair of his head curled so tightly that it all but hid the two small horns peeping through.