Pet Custody Laws in Massachusetts: What Happens to Your Pet in a Divorce or Separation

When a relationship ends in Massachusetts, dividing a home or a bank account follows well-established legal rules. Deciding who keeps the dog or cat is a different matter entirely — and for most pet owners, it is one of the most painful parts of a split. In 4-in-10 divorce proceedings involving dog owners, neither party wanted to give up their pet, according to Psychology Today.

Massachusetts law has historically offered little guidance here, leaving pet owners to navigate a legal framework that treats animals much like furniture. That is starting to shift. A landmark 2024 court ruling and a pair of bills moving through the legislature are reshaping how the state handles pet custody — but as of June 2026, the law has not yet fully caught up with how people feel about their companion animals.

This guide walks you through exactly where Massachusetts stands on pet custody laws, what courts look at when deciding who keeps a pet, and what you can do right now to protect your bond with your animal.

Important Note: This article is for general informational purposes only and does not constitute legal advice. Pet custody law in Massachusetts is actively evolving. Consult a qualified Massachusetts family law attorney for guidance specific to your situation.

Are Pets Considered Property in Massachusetts?

Although animals are treated as sentient beings under laws designed to protect them against animal cruelty, and can even be the beneficiaries of trusts set up to maintain them, there is no Massachusetts law that defines pets as anything other than property. In a divorce, that legal classification matters enormously.

Under Massachusetts divorce law, pets are legally considered personal property — not family members. This means that in the absence of a legal agreement, a judge will decide who gets the pet the same way they would divide a piece of furniture or a bank account.

That said, the courts have begun to acknowledge that pets occupy a unique place in the law. In 2024, the Massachusetts Court of Appeals held that pets, though property, are “special” — Lyman v. Lanser, 231 N.E.3d 358, 366 (2024). While that ruling was limited in scope, it signals a meaningful evolution in how Massachusetts courts view companion animals. You can also review neighbor and cat laws in Massachusetts to understand the broader legal context for animals in the state.

Does Massachusetts Consider the Pet’s Best Interest in Custody Disputes?

Under current Massachusetts law, there is no formal requirement for a judge to weigh what is best for the animal. Courts do not treat custody battles over pets the way they do child custody cases; they will not consider the “best interests of the pet.” Instead, there is no Massachusetts law that defines pets as anything other than property, and ownership will simply be granted to one or the other of the parties.

However, the picture is more nuanced in practice. Some judges, in divorce and separation proceedings, may already choose to consider the interests of an animal in determining pet custody. Providing a standardized legal framework for the process can facilitate more mindful and expedited determinations using a consistent set of factors.

Recently, states have begun creating frameworks for determining with whom the pet should live based on the “best interest of the animal” — a phrase drawn from a core principle in child custody and visitation law. Massachusetts has not yet adopted such a framework by statute, but pending legislation (discussed below) would change that. You can compare how neighboring states handle this by reading about pet custody laws in New York and pet custody laws in New Jersey.

Key Insight: Even without a legal mandate, documenting your role as primary caregiver — vet records, receipts, photos — can influence how a judge exercises their discretion when dividing a pet as property.

How Pet Custody Is Decided in Massachusetts Divorce Cases

Because pets are classified as property in Massachusetts divorces, a judge approaches the question through the lens of asset division rather than family welfare. Typically, in divorce or separation proceedings, the judge will assign ownership of a companion animal to the party who initially paid for the animal’s adoption or purchase.

This is a narrow evaluation that can put the animal’s well-being at risk and particularly penalize victims of domestic violence, whose abusers often control finances and paperwork.

In practice, Massachusetts courts and attorneys consider several practical factors when advising clients or exercising judicial discretion:

• Who paid for the pet: The party whose name is on the adoption or purchase paperwork, or who wrote the check, often receives ownership.
• Primary caregiver: Which spouse has been primarily responsible for the pet’s care — including feeding, grooming, taking the pet to the vet, and other day-to-day responsibilities. Evidence such as vet bills, receipts for pet food, and testimony from witnesses can support claims of primary caregiving.
• Children’s attachment: If children are involved, a judge may consider which parent has custody of the children and the children’s bond with the pet.
• Pre-existing agreements: If the couple has a prenuptial or postnuptial agreement that addresses pet custody, the court will likely honor this agreement. Including pet custody provisions in such agreements can help prevent disputes during a divorce.

Most of the time, the court awards sole ownership of the pet to one spouse. This decision is often based on factors such as primary caregiving and the pet’s best interests. In situations where one spouse is awarded the pet, the other spouse may receive financial compensation for their share of the pet’s value — an approach that treats the pet similarly to other divisible assets in the divorce.

For context on how other states handle similar decisions, see pet custody laws in Pennsylvania and pet custody laws in Michigan.

Can You Get Shared Custody or Visitation for a Pet in Massachusetts?

Shared custody arrangements for pets are not something a Massachusetts court will formally order in a divorce proceeding under current law. Nothing in the Lyman v. Lanser decision should be construed as altering the status of pets in divorce proceedings. The court was careful to draw a clear boundary between property law and family law.

That said, nothing stops divorcing spouses from agreeing to a shared arrangement on their own. Some divorcing couples agree to a shared custody arrangement for their pet. This can involve a schedule where the pet spends time with each spouse on specific days or weeks. A family law attorney can help you draft a written agreement that both parties sign, which a court could then reference if a dispute arises later.

The Lyman case does offer a meaningful data point: the Massachusetts Appeals Court held that parties who jointly own personal property, including pets, may form enforceable agreements regarding their rights to the property. The Court also noted that such agreements could still be enforceable even if they were oral or informally written, such as through text messages and social media communications.

While that ruling applied specifically to an unmarried couple, it demonstrates that Massachusetts courts are willing to enforce shared possession arrangements when the parties have clearly expressed mutual intent. If you are curious how other states approach this, California’s pet custody laws and Washington state’s pet custody laws both allow courts to formally order shared arrangements.

What Happens to Pet Custody for Unmarried Couples in Massachusetts?

If you and your partner were never married, the rules differ from what applies in a formal divorce. There is no divorce court to divide your assets — instead, pet ownership disputes between unmarried couples are resolved through general property and contract law principles.

The 2024 ruling in Lyman v. Lanser is the most important development here. In Lyman, an unmarried couple acquired a Pomeranian dog named Teddy Bear during their relationship. They orally agreed to share custody of Teddy Bear if they ever split up. Massachusetts recently set new precedent for pet custody with this decision, though it was limited to disputes between unmarried partners. The Massachusetts Court of Appeals held that pets, though property, are “special.”

The Court limited its decision to disputes over pets between unmarried partners; a different set of legal principles may govern similar disputes between divorcing spouses. This means the Lyman ruling does not automatically extend to married couples going through divorce.

For unmarried couples without any prior agreement, ownership will likely default to whoever can demonstrate legal title — typically the person who paid for the animal or whose name appears on registration documents. Recent Massachusetts case law allows courts to enforce informal pet custody agreements between non-married partners; however, this does not address how a court handles non-married partners breaking up without any such agreement.

Pro Tip: If you and your partner share a pet but are not married, put your sharing arrangement in writing now — even a simple signed document or a clear exchange of messages can become enforceable under Lyman v. Lanser principles.

For comparison, see how other states handle this situation for unmarried partners: pet custody laws in Minnesota and pet custody laws in Wisconsin.

How a Prenup or Pet Custody Agreement Affects Massachusetts Courts

One of the most reliable ways to protect your relationship with your pet is to address ownership in a formal written agreement before a dispute ever arises. Massachusetts courts generally respect these agreements.

Both prenuptial agreements (before marriage) and postnuptial agreements (after marriage) can include detailed terms about pet ownership in case of divorce or separation. These documents give you and your partner full control over the outcome rather than leaving the decision to a judge applying property law principles.

A well-drafted pet clause in a prenup or postnup can address:

• Which party takes primary ownership if the relationship ends
• Whether a shared schedule applies and what that schedule looks like
• How veterinary costs are split during any shared arrangement
• What happens if one party relocates out of state
• Dispute resolution steps before either party goes to court

Adding a pet clause to your prenup or postnup ensures that your wishes are clearly documented and legally recognized. Unless you have a clear agreement in place, pet custody decisions are unpredictable and can be heart-wrenching.

Standalone pet custody agreements — separate from a prenup or postnup — are also an option for unmarried couples or for married couples who did not address the issue before the wedding. Given the Lyman precedent, Massachusetts courts have shown a willingness to enforce such agreements under contract law principles, even when they were made informally. A written, signed agreement is far stronger than an oral one.

You may also want to review pet custody laws in Arizona and pet custody laws in Georgia to see how other states treat these agreements in court.

Recent and Pending Pet Custody Law Changes in Massachusetts

Massachusetts is in the middle of a significant legal transition on this issue, driven by both the courts and the legislature.

The 2024 Lyman v. Lanser Ruling

Until recently, there was nearly no case law in Massachusetts on the subject of pet custody. The Appeals Court’s decision in Lyman v. Lanser finally provides a comprehensive explanation of how pets should be treated when there is a split between unmarried couples. The court upheld a shared possession arrangement based on contract law, not family law — a distinction that matters for how the ruling applies going forward.

In Massachusetts, pets have always been treated as property. Now, in Lyman v. Lanser, the Court is acknowledging specific carve-outs for when pets may continue to be shared between co-owners. The ruling does not redefine pets as something other than property, but it does confirm that agreements about sharing them are enforceable.

House Bill 1817 and Senate Bill 1206 (2025–26 Legislative Session)

Massachusetts is looking to become the ninth state to standardize a framework for judges to use in determining care and custody of companion animals during divorce. Two companion bills — An Act Standardizing Consideration of Pets in Divorce and Separation, Senate Bill 1205 and House Bill 1817 — have been referred to the Joint Committee on the Judiciary.

S.1206/H.1817 provides a framework for judges to use in determining the care and custody of a pet when a couple is splitting up, while ensuring enough flexibility for a judge to use their discretion in evaluating the best interests of the animal in each individual circumstance.

If passed, an additional section would be added to Chapter 208 (Divorce) of the General Laws, giving courts four factors to consider in awarding sole or shared custody of a pet: (i) whether the parties are seeking sole or shared custody of the animal; (ii) each party’s history with the animal, including time spent, expenses incurred, and caregiving responsibilities such as feeding, walking, playing, grooming, training, and veterinary visits; (iii) the emotional attachment of each party to the animal and, if relevant, of any children in the household; and (iv) whether any party has a history of abuse, cruelty, neglect, or violence toward animals or humans.

The main provisions of House Bill 1817 allow parties involved in a divorce or separation to enter into agreements regarding the custody of their pets, whether sole or shared. Notably, the bill empowers courts to enforce these agreements, providing a legal framework for resolving disputes that may arise.

Pet custody laws help protect the best interest of the family companion animal, protect survivors of domestic violence — many of whom refuse to leave an abuser out of fear for a beloved companion animal — and protect the emotional attachment between the animal and their human family members, including any children involved.

As of June 2026, the bills remain in committee and have not been signed into law. Their passage would bring Massachusetts in line with states like North Carolina and Tennessee that have moved to formalize pet custody considerations. You can track the full text of H.1817 through the Massachusetts Law About Animals resource on Mass.gov, and the Animal Legal Defense Fund’s Massachusetts pet custody page provides ongoing legislative updates.

Pro Tip: Even before any new law passes, you can act now. Draft a written pet custody agreement, keep records of your caregiving role, and consult a Massachusetts family law attorney who has experience with animal-related disputes.

Massachusetts animal law is broader than just custody disputes. If you own other animals or have questions about local regulations, explore related topics such as dog leash laws in Massachusetts, pit bull laws in Massachusetts, and backyard chicken laws in Massachusetts.