Brown trout are prey for many animals:
Aquatic Predators: Larger trout, pike, walleye, bass, muskellunge, catfish, osprey, kingfishers, herons, mergansers, otters, mink, raccoons, and large aquatic insects.
Land Predators: Bears, foxes, hawks, eagles, and owls.
Other Threats: Disease and pollution can weaken trout, making them more vulnerable.
Predators vary by location and environment.