Red foxes have excellent hearing. They can hear low-frequency sounds and rodents digging underground! These fox earrings are made from sustainably sourced wood and 90% recycled display cards. Laser-cut wood Stained with a water-based dye. Ear wires are silver-finished 304L stainless steel, hypoallergenic, and enhanced with a smooth and consistent electrophoretic coating that resists tarnishing.