 Dr. Way reported that the death or disappearance of a territorial male coyote can lead to double litters, and postulates a possible resultant increase in coyote density.Coexistence programs that take this scientific research into account are being pursued by groups such as the Association for the Protection of Fur-Bearing Animals.Animals are frequently trapped in many parts of the world to prevent damage to personal property, including the killing of livestock by predatory animals.