The text of the novel is the narration of Edward Prendick, a shipwrecked man rescued by a passing boat who is left on the island home of Doctor Moreau, who creates human-like hybrid beings from animals via vivisection. The novel deals with a number of philosophical themes, including pain and cruelty, moral responsibility, human identity, and human interference with nature. Wells described the novel as "an exercise in youthful blasphemy".