The widespread use of anticoagulant rodenticides, commonly used rat poisons, is harming not only rodents but also a wide range of carnivores, including bobcats, foxes, and even wolves. These poisons can accumulate up the food chain, leading to declines in predator populations and posing a threat to biodiversity. The study highlights the need for better control methods and stricter regulations to mitigate the unintended consequences of rat poison use.