State Spay and Neuter Laws

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Brief Summary of State Spay and Neuter Laws
Cynthia Hodges, J.D., LL.M., M.A. (2010)

A majority of states have implemented mandatory spay and neuter laws to address the overpopulation of homeless animals. The goal is to decrease the number of unwanted animals that suffer and die on the streets, decrease the risk to public health and safety, and reduce the cost to local governments for impounding and destroying animals. Exceptions to the mandatory sterilization laws are often made for owners who are reclaiming their animals and for animals that are medically unfit. Violations are punishable both civilly and criminally, with fines being the most common penalty for not complying with the sterilization requirement.

Releasing agencies (animal shelters, control agencies, etc.) are required in approximately 32 states to provide for the sterilization of all dogs or cats they transfer or adopt out. Generally, releasing agencies are required to have a sexually mature dog or cat (usually six months of age or older) sterilized by a licensed veterinarian prior to releasing it to a new owner. 

Animals may be released prior to sterilization in certain instances. In most cases, a person who would like to adopt an unsterilized dog or cat must sign a sterilization agreement, agreeing in writing to have the animal sterilized by a licensed veterinarian, usually within 30 days of the date of adoption or of becoming sexually mature. 
The sterilization agreement must contain certain information. such as the following:

- the date of the agreement or adoption; 

- the date by which the dog or cat must be sterilized;

- the dog or cat's age, sex, and general description; 

- the dollar amount of the deposit remitted; 

- the name, address, phone number, and signature of the adopting party;

- the name, address, phone number, and signature of the releasing agency; and

- a statement, printed in conspicuous bold print, that sterilization of the animal is required.

Normally, the person acquiring the animal must pay for the sterilization procedure. If a person is adopting an unsterilized animal, then a deposit is required that is enough to ensure the sterilization of the animal. The deposit can range from $10 ( Oklahoma ) to $35 ( New York ).

The deposit will normally be refunded when the releasing agency receives proof of sterilization. This often entails the presentation of a written statement signed by a licensed veterinarian that the adopted animal has been sterilized. If the animal is not sterilized, the deposit will not be refunded. Deposits that are not refunded may be used to fund sterilization programs ( Arizona and California ).

There are some exceptions to the mandatory sterilization requirements, such as animals used for breeding ( Michigan , Louisiana ), hunting, and livestock production ( Missouri ). Dogs and cats that are sold or released to the United States armed forces, police or other law enforcement agencies, licensed veterinary and medical facilities ( Louisiana ), or to institutions of higher education for use in biomedical research, testing, or teaching ( Texas ) do not have to be sterilized.

Exceptions are also made for small counties ( Texas , California , Arkansas ) and for a lack of veterinary facilities in the area ( Arizona ).
 A number of states do not apply the sterilization requirements to dogs and cats that are claimed by their owners. The owner may have to pay a fee to recover the animal. Arizona requires that the animal shelter make reasonable efforts to locate an animal’s owner before sterilizing it.

Animals that are medically unfit are often exempted from the sterilization requirement. Dogs and cats that have a serious medical or health problem, are sexually immature, or are of advanced age, are not required to be sterilized if it would make the procedure unsafe or endanger the life of the animal. If a licensed veterinarian states in writing that sterilization would jeopardize the animal's health. and that the animal may die as a result of the procedure, then the sterilization procedure may be delayed. If an extension is granted, the animal may be released to the new owner after he or she pays a deposit that is enough to ensure that the animal will be sterilized. Deposits range from $10 ( Massachusetts ) to $150 ( Maine ).

Absent an exception, failure to comply with the sterilization requirements may be punishable civilly or criminally. In Oklahoma , failing to have an animal sterilized is considered to be either a public or a private nuisance. Approximately seven states consider the failure to have a dog or cat sterilized to be a misdemeanor. A fine is the usual penalty, but Louisiana may impose a sentence of up to 30 days imprisonment. The fines vary widely, ranging from $25 ( Louisiana ) to $500 ( Alabama , Arkansas , Maine ), and may include the cost of prosecution, enforcement and court costs. Some states, such as Rhode Island and New Jersey , increase the fine for each subsequent violation. In addition to or instead of a fine, the new owner may also forfeit ownership of the animal, the sterilization deposit, and any claim to expenses incurred in caring for the animal. The adopting party may also have to pay legal fees and court costs ( Florida ). The fines for agencies and organizations range from $50 ( Maine ) to $500 per violation ( Delaware ). Upon conviction of three or more offenses, the releasing agency’s license to operate may be temporarily or permanently revoked in Rhode Island .

The overpopulation of unwanted pets not only results in millions of animals being euthanized each year, but puts pressure on limited public resources to care for and find homes for these animals. States have responded by adopting laws that make it mandatory for releasing agencies to have dogs and cats spayed or neutered. The majority of these laws are directed at new owners adopting pets from dog pounds, animal shelters, or their local humane societies. Several states even use the threat of criminal penalties to enforce such laws. While there are exceptions to these laws, it is clear that states have begun to take problems created by pet over-breeding seriously.


Frequently Asked Questions on Dog Issues
Rebecca F. Wisch (2004)

The following questions represent some frequently asked questions dog owners may encounter.   Remember that dog laws not only vary state to state, but also city to city.   These answers are not meant to provide legal advice, but rather to provide a starting point to research an issue in your own jurisdiction.


Can a dog control officer enter my house without permission to take my dog?

Generally, any law enforcement officer must have a warrant to enter your home unless there are “exigent circumstances” involved.   Exigent circumstances, or those conditions that necessitate immediate action by law enforcement officials, do not apply to minor infractions, such as violation of a leash law or licensing ordinance.   Further, several states have adopted statutes that exempt local dog control laws as exigent circumstances for purposes of warrantless entry into homes.   For more on this topic, see Detailed Discussion of Dog Impound Laws.


My dog escaped and was impounded.   How long do I have to retrieve him

The time a municipality has to hold a dog may be governed by local ordinance or state statute.   Again, this varies from state to state, town to town, but usually the length of time is anywhere from five (5) to seven (7) days.   In some states, the time period may be shorter.   Note that in many states the clock does not begin to run until notice is given to the owner of a licensed dog.   In many cases, unlicensed dogs are considered “loose” or “at large” and may be subject to immediate impoundment or sometimes immediate destruction.   The best situation is to have your dog wear a collar with appropriate license tags.   If your dog escapes, be sure to check local animal control facilities immediately to put them on notice that you will retrieve your dog as soon as possible.   For more on this specific topic, see Detailed Discussion of Dog Impound Laws .


Dog control officers killed my dog even though she wasn’t violating any laws.   What recourse do I have?

There are two approaches that have been used when suing officers who have unlawfully killed dogs.   The first approach is to sue the officer for a violation of due process under law.   The second approach involves a claim of an unauthorized “taking” of property (a dog, since dogs are viewed as property under all states’ legal system).   Both of these suits occur as part of a civil right suit under § 1983 of the United States Code.   These lawsuits charge a deprivation of right while an individual was acting under “color of law.”   Essentially, this means an officer denied someone a constitutionally guaranteed right while carrying out his or her job.   Nearly all federal courts have rejected claims based on due process violations.   However, some are willing to consider unauthorized taking claims based on the misconduct of an officer in killing a dog.   The problem is that a person bringing the suit must overcome an officer’s immunity; that is, the protection a person who works for the government has against lawsuits when carrying out his or her duties.   In general, it is difficult for a dog owner to prevail in these suits unless the officer’s action were clearly outside the bounds of his or her job, or the action was egregious in nature.   A person may also sue a person in state court for damages in the loss of a pet.   Again, however, damages are limited to the market value of a pet (usually a low monetary value).   For further discussion on police shooting pets, click here .         


What happens if my dog gets loose?

The answer to this question depends on whether your dog has a collar and is licensed.   In some states, a loose and unlicensed dog may be subject to immediate destruction.   Most of the time your dog will be impounded immediately if not wearing a licensed.   A few states put a burden on the animal control officer to take reasonable steps to find the owner of a licensed dog.   Generally, a loose dog will be impounded and notice will be sent to the owner if the owner can be determined.   For more on loose dogs, click here .


I can no longer care for my dog and fear I must take him to the dog pound.   What will happen to him?

A dog who is voluntarily surrendered to a dog pound faces the fate of all dogs taken to the pound.   If not sold or adopted, a dog will generally be humanely euthanized after a short period of time.   Keep in mind that many states have provisions that provide for the donation or selling of pets to scientific research facilities.   A state may allow the owner of a voluntarily impounded pet to prevent his or her pet from being sold for research.   Short of adoption, the alternative is generally euthanization.   For more on impoundment, click here .


A loose dog is chasing my horses and sheep.   What can I do?

Many states provide that dogs who chase livestock or even big game face destruction or impoundment.   Your state may have procedures in place where you can file a formal complaint against the owner of a dog who chases your livestock.   You can also call an animal control officer who may take immediate measures if the dog is still in pursuit of livestock.   Ironically, animals found to be chasing livestock or big game in certain states face much harsher and immediate penalties than those found to be chasing people.   For more on dogs chasing livestock, click here .


What happens if I don’t pay my dog license fee?

Dog license fee are generally set by the locality where the dog resides.   States give these municipalities great latitude in setting fees and dog taxes.   In some states, failure to pay license fees not only prevents the issuing of a license, but may also make the dog subject to impoundment.   The best course of action is to talk to local licensing authorities to see if an arrangement can be made for gradual or partial payment.   For more on dog licensing in state dog laws, click here .


Can I let my dog run loose?

The answer to this may depend on whether the locality you live in has adopted an ordinance that strictly prohibits dogs at large.   Some states allow localities to adopt measures by a ballot initiative (a proposal on the ballot that voters must pass to become effective).   Other states prohibit any loose dogs by state statute.   The determining factor whether a dog is considered “loose” may be whether it is in the immediate presence of its owner or whether it has on a collar with dog tags.   In any event, a dog running at will should be collared and licensed and within the owner’s presence to prevent impoundment or injury to others.   For more on leash laws, click here.


The laws in my city seem to conflict with the state laws on regarding my dog.   Which laws do I follow?

The question implicates the issue of preemption:   whether a lower local law is “trumped” by a higher state law.   If the two laws do not conflict, there is not a problem and both laws must be followed.   If, however, the lower law tries to regulate something the higher state law already regulates, then the lower law has been preempted.   State laws usually give great deference or authority to local units to regulate dogs.   But laws that deal with complex and far-reaching issues such as rabies quarantines and dangerous dogs may be exclusively up to the state to regulate.   The local government may be able to help you sort out the conflict in laws.   If following the lower law has led to further problems for you or if you feel following the local law may contradict the state law, consult an attorney.   An argument of preemption may help to invalidate a local law that stretches the municipality’s authority to regulate.   For more on preemption and the intersection of state and local dog laws, click here.


What types of things can a local government regulate with respect to dogs?

A local government is given broad authority to regulate dogs.   This stems from the state’s “police power” or the power to regulate those things affecting the health, safety, and welfare of its citizens.   The state then expressly or impliedly gives this authority to local governments to regulate things affecting dogs and other animals.   Local municipalities are generally in a better position than the state to determine what specific dog laws are needed.   Remember this power is broad and often swift – such measures will almost always be upheld in court if challenged.   These actions do have to meet constitutional standards especially if notice to the owner is required before an action is taken against a dog.   For more on police powers of local and state governments, click here


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Related cases

Take Me Home Rescue v. Luri , --- Cal.Rptr.3d ----, 2012 WL 3727604 (Cal.App. 2 Dist.,2012). Defendant Luri appeals an injunction against her to return a foster dog that she failed to have spayed in accordance with an agreement between her and Take Me Home pet rescue organization. Defendant contends that the original agreement to provide foster care did not require her to spay the dog, and her subsequent interest in training the dog as an "agility dog" provides her an exemption under the Los Angeles Municipal Code's mandatory spay/neuter law. In finding that the trial court did not err in issuing the injunction, the court found that Take Me Home had a reasonable likelihood for success on the merits of its breach of contract claim because the original agreement was amended by a separate oral agreement that the dog would be spayed after recovering from a bout of mange. Further, in assessing the balance of harms, the court found that it favored Take Me Home. While Luri can either spay the dog or adopt a new one, the organization's "entire existence depends on its ability to place pets that it obtains from shelters in adoptive homes."

Related laws

Table of Spay/Neuter Municipal Ordinances


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