A mystery involving dogs with bright blue fur at the Chernobyl disaster site in Ukraine left people wondering if radiation or artificial intelligence was to blame, but a veterinarian working in the area believes they have the answer, which isn't a cause for concern.

Jennifer Betz, the veterinary medical director for the Dogs of Chernobyl program, associated with the Clean Futures Fund —a nonprofit supporting communities experiencing the long-term effects of nuclear disaster —told Newsweek that the team encountered three dogs almost completely covered with a blue substance, likely caused by them rolling around in it.

Dogs of Chernobyl went to the disaster site from October 5 through 13 to work on catching, sterilizing and releasing dogs that were descendants of those animals left be

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