Working with animals is a daily occurrence for millions of people who often complete tasks which are tainted, in spite of the work being seen as essential in modern society. Animal shelter-work is such an occupation. This article contributes to a deeper understanding of the caring–killing paradox (a dissonance that workers face when killing animals they are also caring for), through an insider ethnographic study. We find that care-based animal dirty work consists of unique ambiguities and tensions related to powerlessness, deception and secrecy in the work based on a ‘processing-plant’ framework which informs how workers deal with unwanted animals. We find competing ideologies of care and control to be foundational in this work.