The amazing axolotl may seem like a modern-day miracle, but they've been around for a very long time. They originated in the freshwater lakes around Mexico City, and are critically endangered. The ancient Aztecs named them after one of their gods, Xolotl, and the axolotl even appears on the 50 Mexican peso! These cool creatures are rarely seen in person. They retain their adorable adolescent features but keep growing their whole lives. They can even regenerate their limbs and organs! Celebrate this cutie all year long with this colorful calendar.