Recent research has focused on the role of user-generated content (UGC) in the dark side of engagement on social media. In this study, we apply this to the unique context of the online exotic wildlife trade, a critical area of research due its involvement in devastating global species loss as well as harms to human health and livelihoods. We first conduct qualitative analysis on a large data set of UGC with the automatic machine-learning lexical software Leximancer 4.5.1 to explore the discourse that occurs in comments of posts that promote behaviour change and demand reduction. Then, we complement this by testing an extended elaboration likelihood model to determine the nature of information processing that leads to positive comment valenc...