This is a classic science fiction short story by James H. Schmitz that first appeared in Analog Science Fact and Fiction. The following passage is part of its intriguing intro: 'The most dangerous of animals is not the biggest and fiercest-but the one that's hardest to stop. Add intelligence to that ... and you may come to a wrong conclusion as to what the worst menace is....' This work is part of our Vintage Sci-Fi Classics Series, a series in which we are republishing some of the best stories in the genre by some of its most acclaimed authors, such as Isaac Asimov, Marion Zimmer Bradley, and Robert Sheckley. Each publication is complete with a short introduction to the history of science fiction.