Katmai Fat Bear Week 2025. Fat bear week, a celebration of brown bears’ survival instincts, brought a grisly reminder of the animals’ predatory nature on monday, when a male bear, 469, killed a female,. The surviving cub, called 128’s spring cub, was a contender in the 2025 fat bear junior contest held in late september.

Bears are matched against each. Out of more than a million.