While the idea is handled provocatively in philosophy literature, in practice, animals are envisioned as plaintiffs, not defendants, in animal rights cases.
Christoph Winter (Harvard University; Instituto Tecnológico Autónomo de México; Legal Priorities Project), Nick Hollman (Legal Priorities Project), & David Manheim (Technion - Israel Institute of Technology; 1Day Sooner; Association for Long Term Existence and Resilience (ALTER)) have posted Value Alignment.