
TIME SWITCH AT THE ZOO One day Martin Naumchik, reporter for the Paris Soir, visited the Berlin zoo. He was standing outside the spacious cage housing the newly-acquired Brecht Biped, Fritz, when the world seemed to lurch... Then he was no longer outside the cage looking in, but inside looking out. He was no longer Martin Naumchik. He was Fritz, the Biped, that strange celestial animal from a world eighteen light-years away... At the same time Fritz, who had lived almost all his life in the Hamburg Zoo, also felt the lurching motion. And found himself standing outside the his cage in the body of Martin Naumchik, looking at the frantic Biped inside, who was beating with both hands on the glass...
Author

Damon Francis Knight was an American science fiction author, editor, and critic. Knight's first professional sale was a cartoon drawing to a science-fiction magazine, Amazing Stories. His first story, "Resilience", was published in 1941. He is best known as the author of "To Serve Man", which was adapted for The Twilight Zone. He was a recipient of the Hugo Award, founder of the Science Fiction and Fantasy Writers of America (SFWA), cofounder of the National Fantasy Fan Federation, cofounder of the Milford Writer's Workshop, and cofounder of the Clarion Writers Workshop. Knight lived in Eugene, Oregon, with his wife Kate Wilhelm.