Among the illegal ones, the most sneaky and damaging method to eliminate wolves is the use of poison. Toxic substances used to kill wolves can be dangerous for the whole ecosystem but also for people. The use of poisoned baits is thus not only one of the most serious threats to the conservation of the wolf, but also a dangerous practice also for a large number of other wild species, from small carnivores (foxes, badgers, …) to all those animals that eat carcasses and that can be in turn poisoned by the remains of killed animals.