Frogs around Chernobyl change color - as protection from radiation. Melanin protects against radiation: frogs change color from light green to black.
In the almost 40 years that have passed since the nuclear disaster, ten to 15 generations of frogs have been able to reproduce. That's why the resulting changes are so clearly visible. Wolves in the area have also changed and could now help cancer research. (No) The coloring of the frogs is related to how badly the region was affected during the disaster.