Another interesting biological result at Chernobyl is not mutation, but simply natural selection: Radiotrophic Fungus.

https://en.wikipedia.org/wiki/Radiotrophic_fungus

Fungus that is essentially using "photosynthesis" of gamma radiation from the melted core instead of sunlight to grow.

Take the mutated animal photos with a huge gigantic grain of salt. The "citation needed" alarm rang out loud when I looked at those.