Mark Bachmann returns to talk about a semi-regular small mammal monitoring program he has conducted by Mark Bachmann over the past 18 years in Lower Glenelg River Conservation Park. Of note, this small South Australian reserve has been under the proximal influence of Glenelg Ark for the past 12 years, a comprehensive fox baiting program operating in Lower Glenelg National Park, the adjacent reserve in western Victoria. Not only do the cliffs of the Glenelg River form a significant geographic barrier capable of slowing fox re-invasion to this site, enhancing the effectiveness of the baiting program, but this is also the only location under the direct influence of Glenelg Ark where a long-term baseline dataset exists prior to the baiting program commencing. However, the results have been anything but predictable, with a series of unforeseen impacts on the small mammal community now being observed. These results will be shared and put in the context of a wider discussion about changes that have been or are being observed elsewhere in south-eastern Australia and Tasmania when predators have gone missing. Mark will also highlight the changes that have occurred to the native mammal community in the Newham area.