With three little words, and entire race was nearly obliterated. Every mutant who dies is one number closer to zero. This title follows the Beast as he races against the clock to save this once-thriving race. It collects the "X-Men: Endangered Species One-Shot", and numbered 1-17 back-up stories.

With three little words, and entire race was nearly obliterated. Every mutant who dies is one number closer to zero. "Endangered Species", a series of 8-page back-ups in the four core X-titles, follows the Beast as he races against the clock to save this once-thriving race. This title collects the "X-Men: Endangered Species One-Shot", and numbered 1-17 back-up stories.