Which amphibian deliberately breaks its own bones to project claws as a defense?

Hairy frog

Who is the queen of the Underworld? What sweet food item do people commonly bake for birthdays? What ingredient makes bread dough rise? What country celebrates Christmas by exchanging books and spending the night reading in a tradition called Jólabókaflóð? What team originally included heroes such as Starhawk, Yondu, and Vance Astro in comic books?