In a remarkable event documented for the first time in Switzerland, scientists observed a wolf swimming across a large lake, covering a distance of about 1.5 kilometers in just 90 minutes. The wolf, referred to by its GPS tracking code M637, crossed from one shore to the other on February 13, an event that biologist Flurin Kunz described as impossible for the animal to have circled the lake within such a time frame. With water temperatures around 5 degrees Celsius, the only plausible explanation for this feat is the wolf's swimming ability.

Kunz explained that while the swimming distance is theoretically possible for dogs, this instance marks the first documented case specifically for a wolf. The tracking collar on the 3 to 4-year-old male wolf has allowed researchers to monitor not only this remarkable lake crossing but also M637’s extensive travels covering several hundred kilometers. The data collected has significant implications for understanding wolf behavior and ecology in the region, providing insights into their adaptability in facing environmental challenges.

This particular wolf is currently in the breeding season, typically occurring in February and March, and is on the hunt for a female partner to form a pack. If he finds a mate, it is expected that he will settle in one area, which could have broader implications for wolf population dynamics in Switzerland as they continue to integrate into the local ecosystem after being previously endangered in the region.