Gray foxes are common in the large areas of natural habitat within the Santa Monica Mountains and surrounding areas, but seem to be rare in the small habitat fragments isolated by urbanization where other medium sized carnivores (bobcats and coyotes) have persisted. We have only captured and followed a few foxes in these urban fragments and therefore we do not have a lot of information on them in these areas. However we do know from following foxes in some of the more natural areas that they compete for resources and are preyed on by both coyotes and bobcats. Gray foxes also tend to avoid areas of high coyotes densities and coyotes have been quite successful and prolific in the urban fragmented areas. Canids (which include coyotes and foxes) are highly susceptible to the anticoagulant rodenticides used to control rodents and both species have been found dead from ingesting these toxins, which are commonly used in the urban areas. Like bobcats and coyotes, foxes are most likely ingesting these anticoagulants secondarily through preying on small mammals that have previously ingested the baits.