Tells the stories of a planet inhabited by semi-intelligent apes, spacefaring creatures, alien doubles, a rocket crash survivor, an eccentric inventor, and alien fighting beasts
Eleven stories deal with a curious monster, an alien collector of life-forms, a helpful robot, alien tribes, a monster that escapes from a spaceship craft, and a green, egg-shaped predator
Stories by Roger Zelazny, Harlan Ellison, Poul Anderson, Sterling Lanier, and Gordon R. Dickson highlight inter-species cooperation, as humans and aliens hunt together