A B S T R AC TFoster carers' knowledge of caring for abused and neglected children is a largely under-researched area. We know very little about the nature of carers' knowledge in relation to caring for children who have been abused or neglected. This paper reports on an exploratory study which examined the knowledge of caring. Qualitative data were analysed based on in-depth interviews with 10 foster carers in Queensland, Australia. A range of knowledge was identified showing an interaction of both personalized and formal understandings in the caring response. Given the breadth of knowledge recognized from the analysis, this paper presents one dimension of their knowing: theory and abuse-indicated understandings. Participants' responses in these areas were at times sound, but many struggled to provide convincing and well-formed explanations of topics, such as attachment, harm and child development which may suggest that their understandings are not what they could be. Although further research is needed on a larger scale, this study does highlight the necessity to re-examine processes and strategies for carer knowledge support, so as to strengthen their understanding of these issues.