When night fell on Uganda’s second-largest national park in early February, Jacob, a three-legged African lion, made several attempts to cross a dangerous channel with his brother, Tibu.
Likely motivated by a scarcity of lionesses and the “strong” presence of humans at the only available land connection, the two lions repeatedly entered the Kazinga channel in darkness. They doubled back three times, “due to what appears to be encounters with either hippopotamus or Nile crocodiles,” researchers wrote in an upcoming paper accepted in the scientific journal Ecology and Evolution.
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On their fourth try, the siblings successfully swam as far as 1.5 killometers, or 0.93 miles, to reach the other side, in what researchers called the “first visually long distance swimming event recorded for the species.”