Overall, the toxicology of Australian marsupial species is poorly understood. Studies that have been conducted are often short-term or in response to an identified animal welfare issue, and monitoring or general baseline data is lacking across the majority of Australian marsupial species.1 To date, no toxicological studies have been conducted on brushtail possums (Trichosurus sp). In the Strathbogie Ranges in Victoria, mountain (T. cunninghami) and common (T. vulpecula) brushtail possums, occur sympatrically. The habitat of brushtail possums at this location consists of a fragmented landscape including agricultural land, logged plantations, native forest and extensive linear roadside remnant vegetation.2 In this pilot study, individual possums were trapped and sampled for faeces, hair and blood. Samples were analysed for trace metal contaminants. This research aims to provide the first quantitative ecotoxicological assessment of brushtail possums in Australia, and act as a stepping stone for further research into the ecotoxicology of these species.