Source Gallery: https://izismile.com/2019/06/26/nature_takes_chernobyl_back_65_pics.html
Archived Source Gallery: https://web.archive.org/web/20240317193848/https://izismile.com/2019/06/26/nature_takes_chernobyl_back_65_pics.html
The gallery has more photos such as this.
I don’t think it is fully understood, but there is some evidence that the wolves are becoming cancer resistant
https://www.popularmechanics.com/science/animals/a46799706/mutant-wolves-of-chernobyl/