Wolf swims across Lake Lucerne

The wolf's (labelled M637) route (c) Kora

A wolf being tracked by researchers has surprised everyone by swimming across Lake Lucerne.

The male wolf tracked a journey of nearly 240 kilometers in just eleven days, migrating eastward from the Jura Mountains through Canton Fribourg to the Emmental. 

Then he faced a challenge - Lake Lucerne.

Instead of circumventing the lake, the tracking data shows the wolf swam nearly 2 kilometers in water temperatures of only 5 degrees. 

Experts say they’ve never seen that before.

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