The Nonhuman Rights Project exists to secure fundamental legal rights for nonhuman animals. That goal requires sustained, long-term effort to overcome a legal system whose inertia continues to block well-established principles of justice, liberty, and equality from being fairly applied to animals. In 2025, we took significant steps forward on multiple fronts.
One of the most important stories of 2025 is the development of additional legal strategies beyond habeas corpus cases seeking a right to bodily liberty for cognitively advanced animals. Informed by how courts have reacted to our habeas corpus cases, we completed a 115-page “Access to Justice” research project evaluating 17 potential interventions aimed at developing procedural rules to treat animals like subjects of the legal system entitled to fair process and protection. That research led to our “Freedom from Cruelty” strategy which seeks recognition that existing anticruelty laws create enforceable rights belonging to animals themselves while also providing a solution to the problem that anticruelty laws often go unenforced. In early 2026, we went public with that theory in a case filed on behalf of the approximately 2,000 beagle dogs and puppies held in cruel conditions at Ridglan Farms in Wisconsin.
Meanwhile, we continued our historic habeas corpus work seeking liberty for 21 nonhuman animal clients across five states. In January 2025, the Colorado Supreme Court addressed whether elephants held captive at the Cheyenne Mountain Zoo are entitled to bodily liberty, making it only the second U.S. state high court to take up the question. In October, the Michigan Court of Appeals heard and rendered a decision in our case on behalf of the chimpanzees held captive at the DeYoung Family Zoo, a case supported by world-renowned primatologists including the late Jane Goodall. We also filed new habeas corpus petitions in Los Angeles and Pennsylvania, bringing the question of elephant liberty before courts in both states for the first time. In Pennsylvania, those filings led to hearings and, in early 2026, the third habeas corpus order for a nonhuman animal in U.S. history.

In January 2025, the Colorado Supreme Court issued its opinion in our longstanding case to secure recognition of their right to bodily liberty and their release to an accredited sanctuary. This marked only the second time in history that a U.S. state high court addressed whether the fundamental liberty right protected by habeas corpus extends to a nonhuman animal (our New York case on behalf of the elephant Happy was the first).
In ruling that elephants do not possess an interest in liberty, the Court acknowledged that the allegations in our petition, accepted as true, “demonstrated the elephants would be better off in an accredited elephant sanctuary.” Yet it declined to look past their nonhuman biology, disregarding scientific evidence and fundamental principles of justice, liberty, and equality. We challenged this reasoning in a petition for rehearing, urging the Colorado Supreme Court to reconsider its decision. The Court denied rehearing. In doing so, it leaves in place a decision that makes clear the legal barriers that must be overcome to secure recognition of nonhuman animals’ right to liberty.









