Abstract Seven undergraduate students are pointing in these special issue of Ethic@ to the philosophical relevance of studying SingerÂ’s and ReganÂ’s ethical approach to interests and rights of non human sentient, subject of a life beings. In a sense, their papers represent a way of breaking silence and moral indifference to non anthropocentric interests, traditionally ignored by moral philosophers around the planet, specially in Brazil, where animals usually are considered as objects of property. At the Department of Philosophy of the Universidade Federal de Santa Catarina (Brazil), the students have the opportunity to investigate moral theories that represent a critical approach to conservative moral dogma that have been defended by moral thinkers around the world for centuries. The articles that these young students have written show that it is possible to hope, even in philosophy, to break moral conservatism by stimulating people to think about things that have been silenced in order to protect human interests while violating animal ones.