This interesting video describes the efforts to reintroduce Tasmanian devils to the mainland and also mentions the close relationship connection between devil populations and invasive feral cat populations. Feral cats kill heaps of mammal wildlife in Australia.

This video from from Calum Cunningham, of the University of Tasmania, goes in to more detail about how the awful face tumour epidemic in Devils has caused a 58% increase in feral cat abundance in the habitats where Devils have declined.

Further reading

Reintroducing Tasmanian devils to the mainland

• Tasmanian devils return to mainland Australia for first time in 3,000 years, WildArk
• The bold plan to bring back Tasmanian devils across mainland Australia, New Scientist (Paywalled)
• If wildlife vigilantes smuggle Tassie devils to the Australian mainland, the animals could live in secret for 20 years, The Conversation
• Tasmanian devil > Distribution and habitat, Wikipedia

Devils vs feral cats

• Evidence that devils suppress cats; researchers suggest mainland trial, University of Tasmania
• Tasmanian devils keep feral cats at bay, in turn saving bandicoots, study shows, ABC News
• Importance Of Devils In Keeping Feral Cats In Check, Landcare Tasmania

Devil face tumour disease

• Distribution and Impacts of Tasmanian Devil Facial Tumor Disease, archived PDF from tas.gov
• Devil facial tumour disease, Wikipedia