Animals Are Going to Have Legal Rights Within a Decade

The Question

In November 2014, a judge in Buenos Aires did something no court in the Western Hemisphere had done before. She ruled that Sandra, a 29-year-old Sumatran orangutan who had spent her entire life in the Buenos Aires Zoo, was a "non-human person" entitled to a writ of habeas corpus — the ancient legal instrument against unlawful detention of persons. The ruling was upheld in substance, and Sandra was transferred to a great ape sanctuary in Wauchula, Florida, in 2019.

Two years later, a judge in Mendoza granted a similar writ to Cecilia, a chimpanzee held alone in a concrete enclosure, calling her confinement "arbitrary" and ordering her transfer to the Great Apes Sanctuary of Sorocaba in Brazil. These are not fringe cases. They are early data points of a global legal trend accelerating faster than most people realise — with profound implications for agriculture, research, companionship, and the economy.

What the Evidence Shows

The Nonhuman Rights Project (NhRP), founded by attorney Steven Wise in the United States, has filed habeas corpus petitions on behalf of chimpanzees Tommy and Kiko in New York State. Both cases were ultimately dismissed — the New York Court of Appeals ruled in 2018 that legal personhood requires the ability to bear duties and responsibilities, which the court held chimpanzees cannot — but not before generating serious judicial debate. Three judges wrote opinions acknowledging that the question of animal personhood deserved genuine legal analysis. The cases were lost; the argument was not.

The global picture is broader still. In 2017, New Zealand granted legal personhood to the Whanganui River, recognising it as an ancestor of the Māori people. Ecuador's constitution has since 2008 recognised the rights of Pacha Mama — nature itself. India's Supreme Court has explicitly declared that "every species has a right to life" under Article 21 of the Indian constitution. This is a serious intellectual and legal movement operating simultaneously across multiple continents and legal traditions.

The Naruto case — PETA's copyright lawsuit on behalf of a macaque that took a selfie with a photographer's unattended camera — was dismissed by the Ninth Circuit in 2018 for lack of standing under US copyright law. But the court did not say animals can never have legal standing; it said this statute did not confer it. That distinction matters enormously.

Why This Is Happening

The science of animal cognition has transformed. When Peter Singer published Animal Liberation in 1975, attributing rich inner lives to animals was dismissed as naive anthropomorphism. That view is now the minority position among cognitive scientists. Elephants pass the mirror self-recognition test. Chimpanzees demonstrate theory of mind. Bottlenose dolphins use signature whistles — effectively proper names. Crows use tools, plan ahead, and recognise individual human faces. The Cambridge Declaration on Consciousness (2012) explicitly stated that non-human animals possess the neurological substrates for conscious experience. The scientific ground has shifted dramatically under the legal ground.

The legal infrastructure is already being built. Animal law is now taught at over 170 law schools in the United States, up from a handful in the 1990s. The Animal Legal Defense Fund has won dozens of cases expanding enforcement of animal welfare statutes. Several US states have passed laws allowing pets to be included in domestic violence protective orders. The legal infrastructure for taking animal interests seriously in court is expanding even in jurisdictions that have not yet granted formal rights.

Factory farming is creating a crisis of moral contradiction. The same societies that prosecute dog-fighting with felony charges confine billions of pigs, chickens, and cattle in conditions of extreme restriction and suffering. This contradiction is becoming increasingly visible — and increasingly uncomfortable for courts, legislators, and citizens who consider themselves animal lovers. The gap between how people feel about their pets and how the food industry treats farm animals is a gap that animal rights advocates are driving a legal wedge into, with growing success.

What Could Happen

What Can We Do

The question of animal rights has immediate, practical policy dimensions. The decisions made in the next decade will shape the legal status of the natural world for generations.

Support targeted legislation for the most cognitively complex animals. Great apes, cetaceans, and elephants represent the strongest scientific case for legal personhood. Focused advocacy for legislation banning their use in entertainment and non-essential research — already the law in several countries — builds momentum without triggering the agricultural backlash that broader rights claims risk.

Strengthen and enforce existing welfare laws. In most jurisdictions, animal cruelty laws are chronically under-enforced due to lack of resources and prosecutorial priority. Improving enforcement of laws already on the books would prevent enormous suffering and build institutional capacity for the next step without requiring new legislation.

Fund cognitive science and ethology research. The legal case for animal rights depends partly on the scientific case for animal cognition. The stronger and more publicly understood that scientific case becomes, the more difficult it is for courts and legislatures to treat animals as mere property. Public investment in comparative cognition research at institutions like the Great Ape Trust and the Dolphin Research Center pays legal and ethical dividends.

Engage the farming industry in transition planning early. If legal rights for some animals are coming regardless, the farming industry's interests are better served by participating in the design of a transition framework than by opposing the entire concept. Agricultural producers who participate in early discussions about what rights-based regulation of farm animal welfare might look like will have more influence over the outcome than those who simply resist.