A growing movement argues that highly cognitively complex animals deserve legal personhood — the right to legal standing in courts. Understanding the arguments and evidence helps evaluate whether and how legal rights could transform animal welfare.
The welfare case for animal legal personhood rests on the argument that property law cannot adequately protect sentient beings. When animals are legally property, their interests are balanced against owner interests and typically lose. Legal personhood would allow animals to be represented in court proceedings directly, enabling challenges to conditions that cause suffering regardless of whether the owner consents. Critics argue it creates implementation challenges and philosophical category errors. However, the evidence that great apes, elephants, cetaceans, and corvids have self-awareness, long-term memory, and future planning ability — capacities associated with personhood in human law — creates a strong philosophical basis for extending at least limited legal standing to these species.