The literature presents a broad approach to Corporate Social Responsibility, which aggregates a diversity of issues, such as the environment, labor conditions, and human rights. We addressed the impact of increasing CSR demands during the internationalization of emerging market multinationals on one particular subject, animal welfare. This subject raises important ethical concerns, especially as we understand that animals are sentient beings. Through content analysis of annual reports, we tracked the evolution of AW-CSR activities throughout the internationalization of two large Brazilian (...) meat-processing multinationals as they accessed markets with complex AW regulations. We also synthetized findings on broiler chicken on-farm AW research in Brazil and conducted interviews to gauge the impact of CSR standards on animals. Our findings show that, although EMNs that enter developed markets engage with various standards, the impacts of standard enforcement on actual welfare are not straightforward and call for broader AW and animal ethics developments. Uneven results among AW criteria indicate that some aspects are prioritized over others. Furthermore, some actions of actors such as EMNs and low-tier suppliers seem to counterbalance the expected impact of normative pressures to change the lives of animals for the better. We conclude that AW standards may improve AW in emerging markets; but these standards do not appear to be sufficiently stringent, and require improvements to have a more significant positive impact. A major signal emerging from this research is the fundamental need to broaden the animal ethics debate regarding the use of animals to produce meat. (shrink)