France, Feb. 15 -- A white stoat sniffs the wind and frolics with its brown companion amid a blizzard, in animated scenes introducing Tina and Milo, the mascots for the Milano-Cortina 2026 Winter Olympics.

But this charming spectacle in the Italian Alps is becoming increasingly unrealistic, due to irregular snow cover from year to year - according to biologist Marco Granata.

"Around November, the stoat's brown fur turns white for camouflage," he explained to RFI.

"The problem is that with climate change, snowfall is becoming increasingly rare and irregular. More and more often, the stoat is white in a world that is no longer white, making it an easy target for predators."

According to Granata, the stoat population's winter survival ra...