The Right to Personhood: One Professor鈥檚 Fight for Animals
Sturm College of Law professor Justin Marceau says he believes some animals can鈥攁nd should鈥攂e designated as persons under the law. Here鈥檚 why.

What if dogs were more than just 鈥渕an鈥檚 best friend?鈥
That鈥檚 an over-simplified version of the question being asked by animal rights lawyers like Justin Marceau, the Brooks Institute Faculty Research Scholar of Animal Law and Policy at the Sturm College of Law.
Essentially, some activists and legal scholars are arguing that some animals鈥攍ike dogs and elephants鈥攕hould be granted 鈥渓egal personhood.鈥 is defined as 鈥渁 human or a nonhuman legal entity that is treated as a person for legal purposes.鈥 Some business organizations, like corporations, have been deemed legal persons, but generally, animals are not.听
Marceau says while it might seem radical to say that animals should be granted legal personhood, most animal rights activists argue that animals should be treated with basic decency.
鈥淭hey鈥檙e not actually trying to have them vote in the next presidential election,鈥 he says. 鈥淭hey're just saying, with [legal personhood] comes certain obligations to treat them in a way that respects their rights and ability.鈥
Does it matter that 鈥榓n elephant never forgets?鈥
In January, an animal rights group鈥檚 attempt to compel the Cheyenne Mountain Zoo to transfer its five elderly elephants to a 鈥渟uitable elephant sanctuary.鈥 The group claimed that the zoo mistreated the elephants to the point of 鈥渃hronic frustration, stress, physical disabilities and brain damage.鈥
鈥淭he basic claim was that the confinement of animals of this level of intelligence is not permissible, and they used a legal vehicle called habeas corpus,鈥 Marceau says.听
鈥淗abeas corpus鈥 is a legal framework used to determine if the detention of a person鈥攗sually a prisoner鈥攊s valid. Ultimately, the Colorado Supreme Court ruled that habeas corpus does not apply to 鈥渘onhuman animals,鈥 only to a 鈥減erson.鈥
This case, Marceau says, gets to the heart of animal rights groups鈥 argument that some animals should be designated as legal persons.听
鈥淲hat these lawyers were essentially saying is鈥攆or certain beings for whom the science is particularly strong鈥攖hat they have autonomy in the truest sense,鈥 Marceau says. 鈥淭hey have a theory of mind. They're able to kind of reflect on the past. I mean, one of the elephants passed the mirror test.鈥
Marceau is referring to a 2005 experiment, done on Happy the Asian elephant, which purported to prove that elephants are self-aware.听
鈥淗appy faced her reflection in an 8-by-8-foot mirror and repeatedly used her trunk to touch an "X" painted above her eye,鈥 . 鈥淭he elephant could not have seen the mark except in her reflection. Furthermore, Happy ignored a similar mark, made on the opposite side of her head in paint of an identical smell and texture, that was invisible unless seen under black light.鈥
What about Fido and Mittens鈥攐r Charlotte鈥檚 friend Wilbur?
As for the animals we hold nearest and dearest鈥攄ogs, cats, birds, lizards and other 鈥渃ompanion animals鈥 in our lives鈥攖hey are the most protected species under the law. The of 2019 makes the 鈥渃rushing, burning, drowning, suffocating, impaling or sexual exploitation鈥 of animals a federal offense. And many states have state-level laws that protect companion animals specifically.
Not all species are protected, even if some are domesticated and considered companion animals. It differs by situation.
鈥淵ou could take an animal鈥攍ike a pig. A pig could be a pet, and if you were raising a pig, you would be fully required to follow all the laws just as though she was your dog,鈥 Marceau says. 鈥淚f she was a wild pig, it would be totally different.鈥
Wild pigs, in many states, can be legally hunted and killed.
The state-level animal welfare laws that apply to companion animals like dogs and cats often have exemptions. Colorado鈥檚 animal protection laws for people participating in 鈥渁ccepted animal husbandry practices鈥濃攂reeding鈥攆or both livestock and companion animals.
And some of the 鈥渟tandard practice鈥 exemptions that apply to livestock can be extreme, Marceau alleges.
鈥淵ou might have a pig that's small and use blunt force trauma to the head to kill the animal, because he's not going to grow into a big pig. It's not going to be profitable,鈥 he says. 鈥淭hat would be cruel to do to a dog. But it's not to a pig, because it's standard practice.鈥
鈥淣obody would think this is okay.鈥
In a recent decision handed down by the 16th circuit court in the state of Wisconsin, a judge granted the request of animal rights activist groups to appoint a special prosecutor in a case against a local commercial dog breeding facility called Ridglan Farms.
鈥淧etitioners have shown that there is probable cause to believe that Ridglan has committed crimes under Wisconsin鈥檚 animal cruelty laws,鈥 the order reads.听
Marceau is involved in the case by way of Sturm鈥檚 (AALDP), which is representing the animal rights groups in the case. Marceau co-founded and helps to direct the clinic.听
The case in Wisconsin outlines graphic details about how AALDP claims the dog breeders have been treating the dogs, including confining them to small spaces and performing medical procedures without anesthesia.听
鈥淚t's horrific,鈥 Marceau says. 鈥淣obody would think this is okay, but this happens hundreds and hundreds and hundreds of times. I think people don't understand that this kind of thing exists and is out there. We're trying to show that these dogs are a form of legal person.鈥
Marceau鈥檚 big-picture case for animal rights
While Marceau does love animals, he says his fight for the rights of nonhuman beings is about more than advocating for furry friends. It began with his work on death penalty cases after law school.
鈥淚've always been interested in beings who have been at the bottom of the barrel in the legal system, and the legal system has, in many ways, either failed them, or there's nothing else for them to do,鈥 he says. 鈥淏eings who are suffering and that the law seems to have turned its back on鈥攖hat's always just been a draw for me.鈥
He remembers hearing people on death row being described in ways that did away with their humanity: 鈥淭hey always had to be othered in a way that animalizes; 鈥楾hey鈥檙e cockroaches. They鈥檙e rats. We have to treat this person like a beast.鈥欌欌
Marceau says he sees animal rights as inextricably linked to the rights of all beings鈥攈umans, too.
鈥淚 don't think we're going to achieve justice for humans if animals keep suffering,鈥 he says.