Introduced predators, Australia

In Australia, house mice living on islands without predators did not avoid traps treated with predator odors. In areas where the introduced red fox or house cat occur, or the native western quoll, Dasyurusgeoffroyii, the mice avoided... 

Rabbits and hares are well-known animals to most people. The natural distribution of this group of animals is extensive, occurring worldwide except for Madagascar, Australia, New Zealand, and various Pacific islands. However, humans have deliberately introduced rabbits to these other places, in particular the European rabbit Oryctolagus cunicidus) and the European hare Lepus europaeus). Both of these species typically become pests in their introduced habitats, where their abundance is not well controlled by predators. 

Numbats were much more widespread in the past, and now occur only in the southwest portion of western Australia. Destraction of their habitat for agriculture and predation by introduced foxes has contributed to their decline. Despite stabilization of their habitat, numbat populations are currently small and scattered. Because they are considered rate and endangered, breeding colonies have been established with the hope of returning captive-bred animals to the wild. 

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