In spite of the great tradition in social movement studies, Italy completely lacks any contribution regarding animal advocacy from the point of view of political sociology. This is despite the fact that, as in the rest of Western societies, interest in the wellbeing, rights and status of non-human animals is growing. This can be seen both among the general population and in the very varied organised forms of welfare and activism. In this article, we will investigate this internal differentiation, starting from an initial stratification in welfare, protectionism and anti-speciesism, and focusing in particular on the following two aspects: ethical values; and political ‘careers’ and multi-membership affiliations. The investigation was accomplished by means of 20 semi-structured interviews and an online questionnaire answered by 704 volunteers and activists. The tripartition hypothesised was confirmed, although with a few exceptions: more progressive values emerged among anti-speciesists, and conservative positions among protectionists and welfarists, but the overall spectrum is characterised by utilitarian perspectives. Similarly, previous experience in the specific field of animal advocacy is typical of the protectionist area, while anti-speciesists also come from other opposition movements.