Based on data from a survey of animal welfare activists, this article proposes a descriptive classification of all the practices through which individuals dedicate themselves to their cause. This inventory helps us to understand how activism can be shaped by three different types of attempts at change. More importantly, it invites us to examine how, over time, activism is continuously underpinned by social habits that are as much personal as they are public. The result is a series of alternatives much broader than the repertoires of collective action generally taken into account by the often-too-strategic approaches used by sociology theories on activism.