Pennsylvania (USA) Court Case: habeas corpus petition for the rights of Pittsburgh Zoo Elephants

Summary

The NhRP is a civil rights organization that works to secure rights for nonhuman animals. It has previously asked courts to recognize the legal personhood of elephants, great apes, and cetaceans. In October 2025, the Nonhuman Rights Project (NhRP) filed a lawsuit against the Zoological Society of Pittsburgh regarding the captivity and treatment of two elephants, Victoria and Zuri. This lawsuit used a habeas corpus petition—a common law tool traditionally used to challenge institutional detention of humans and demand their release—as a means for the court to recognize the legal personhood of the elephants and effectuate their release to an approved sanctuary. Legal scholars often credit Christopher Stone’s 1972 law review article “Should Trees Have Standing?—Toward Legal Rights for Natural Objects” with introducing the concept of legal personhood for nature to modern Western legal thought (45 S. Cal. L. Rev. 450 (1972)).

The NhRP’s petition includes expert testimony that elephants are autonomous, capable, and require specific and appropriate environments, and that the Pittsburgh Zoo fails to provide such an environment. In fact, the Zoo subjects the animals to conditions that cause physical and psychological damage; the Zoo “has repeatedly appeared on In Defense of Animals’ ‘10 Worst Zoos for Elephants in North America’ list.” (Kelly Holt, Judge Issues Pennsylvania’s First Habeas Corpus Order for Nonhuman Animals, Nonhuman Rts. Project (Jan. 13, 2026), https://www.nonhumanrights.org/blog/judge-issues-pennsylvanias-first-habeas-corpus-order-for-nonhuman-animals/). The necessary action, the petition claims, is rewilding of the elephants, or placement in a sanctuary accredited by the Global Federation of Animal Sanctuaries (GFAS).

The NhRP’s petition uses habeas corpus (the “Great Writ”) to construct a case for the legal personhood of Victoria and Zuri. Pennsylvania’s Habeas Corpus Act, it argues, does not restrict who can claim protection under its authority. From a legal standpoint, “person” is not equivalent to “human” and therefore based on the demands of justice and changing societal norms, the court should recognize the elephants’ right to bodily liberty as protected by habeas corpus.

The petition’s habeas argument is grounded in legal personhood theory. It states that: “The recognition of the right to bodily liberty for Victoria and Zuri would not encompass any other rights. ‘As many Native American tribes have recognized, legal personhood of animals recognizes them as living, sentient beings, instead of merely property. Thus, the legal personhood of animals does not grant them identical rights as humans (or, for that matter, other nonhuman animals) because their inherent rights are derived from their unique ability to suffer.’” (Verified Petition for a Common Law Writ of Habeas Corpus at 85, Nonhuman Rts. Project, Inc. v. Zoological Soc’y of Pittsburgh, No-GD-25-010963 (Pa. Ct. of Common Pleas, Oct. 21, 2025) (quoting MacKenzie Holden, Nonhuman Personhood: Recognizing Liberty Interests for Highly Sentient Animals, 55:4 Ariz. St. L. Rev. 1571, 1597 (2024)).

In January 2026, the court issued an order to show cause, requiring the Zoo to justify the elephants’ confinement. This was the third nonhuman animal habeas corpus order in US history, all of which resulted from NhRP lawsuits. Along with the order to show cause, the court ordered a hearing on the Zoo’s motion to dismiss.

In February 2026, the court granted the Zoo’s motion to dismiss, denying the NhRP’s petition and closing the case. The case, however, is ongoing: the NhRP appealed the case to the Superior Court of Pennsylvania shortly after the dismissal. (Notice of Appeal, Nonhuman Rts. Project, Inc. v. Zoological Soc’y of Pittsburgh, No-GD-25-010963 (Pa. Ct. of Common Pleas, Mar. 9, 2026)).

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