The effective altruism movement has directed significant resources and analytical focus toward identifying the highest-impact interventions for animal welfare per dollar spent.
The effective altruism approach to animal welfare asks a deceptively simple question: given limited resources, which interventions help the most animals most effectively? This framework has directed significant philanthropic resources toward farmed animal advocacy — particularly corporate campaigns — while highlighting wild animal welfare and invertebrate welfare as potentially enormous but neglected causes. The approach is not without critics, but its systematic analytical rigour has productively challenged assumptions about which welfare interventions deserve priority.