SF fans and animal lovers will relish [Iron Cage, a] tale about a new breed of cats that inhabit an outer galactic planet. Initially, the creatures befriend humans who have escaped from the cages of the "Big People," but the plot comes full circle when a space ship brings visitors who intend to cage and study the animals…. The only jarring note is a prologue and epilogue which uses a modern day parallel—abandoning a house cat about to deliver kittens in the town dump—to didactically point up the moral. Though not as fast paced as Norton's Forerunner Foray … nor as involved with scientific data as Breed to Come …, this is still interesting and complex enough to rate well above most science fiction offerings. (p. 109)

Kathryn A. Litsinger, in School Library Journal (reprinted from the September, 1974 issue of School Library Journal, published by R. R. Bowker Co...