No, you cannot take your pet dog inside Costco stores.
Costco allows only service dogs that are individually trained to perform tasks for people with disabilities, as required under federal law. Emotional support animals, therapy dogs, and pets are not permitted inside Costco warehouses, regardless of size or behavior.
This policy is driven by food safety regulations, liability concerns, and compliance with service animal guidelines under the Americans with Disabilities Act. Understanding these rules helps members plan their shopping trips and avoid entry issues or membership violations.
This guide breaks down Costco’s dog policy, explains which animals are allowed, why the rules exist, and what alternatives dog owners have.
Costco's pet policy aligns with federal law under the Americans with Disabilities Act (ADA), which governs service animal access in public accommodations. The warehouse retailer's stance is clear and consistent across all U.S. locations:
Allowed:
Not Allowed:
The ADA defines service animals as dogs (and in rare cases, miniature horses) individually trained to do work or perform tasks for people with disabilities. These tasks must directly relate to the person's disability, such as:
As a retailer selling groceries and prepared foods, Costco operates under stringent health department regulations. Most health codes prohibit animals in food preparation and storage areas, with exceptions only for working service animals. This regulatory framework reinforces Costco's policy and applies equally to the food court, bakery section, and deli areas.
When signing up for a Costco membership, members agree to follow warehouse policies, including pet restrictions. Violations can result in membership suspension or termination, though enforcement typically involves asking members to remove unauthorized animals rather than immediate penalties.
Costco allows only service dogs inside its warehouse stores. These dogs are individually trained to perform specific tasks for a person with a disability.
Various service dog breeds are permitted in all customer areas under federal law. They cannot be denied entry based on breed, size, or appearance, as long as the dog remains under control and well-behaved.
Emotional support animals, therapy dogs, and pets are not allowed inside Costco. Even if an animal provides comfort or has documentation such as an ESA letter, it does not qualify for public access in retail environments. These animals are legally treated the same as pets and may be refused entry.
Costco restricts ESAs and pets because the ADA does not grant public access rights to animals whose sole role is emotional support. Without task-specific training, retailers must follow food safety rules and manage liability concerns, making consistent enforcement necessary. Staff may politely explain this distinction if ESA documentation is presented at the entrance.
The ADA provides clear guidelines about what questions businesses can ask service dog handlers, protecting both disability privacy and business interests. Costco employees receive training on these parameters.
Two Permitted Questions
When it's not obvious what service an animal provides, Costco staff may ask only:
These questions must be answered, but responses can be brief. For example: "Yes, she alerts me to oncoming seizures" or "He guides me because I'm visually impaired."
Prohibited Questions and Requirements
Costco employees CANNOT:
Identification Accessories: Optional, Not Required
Many service dog handlers use vests, harnesses, or ID cards to reduce public inquiries, but federal law does not require these identifiers. Costco cannot deny access to a legitimate service dog lacking visible markers.
However, these identifiers can expedite entry and reduce questioning. They're available from various sources but hold no legal weight—anyone can purchase them online, which is why they're not legally mandated or reliable verification.
Even for legitimate service dogs, Costco may exclude an animal if:
In these situations, Costco must still offer the person the opportunity to shop without the animal.
While ESAs cannot access Costco, many individuals still need proper ESA documentation for housing situations where these animals are protected. Understanding the difference between service dogs and emotional support animals is critical for Costco's access policies.
Who Can Issue ESA Letters
Only licensed mental health professionals (LMHPs) who can write valid ESA letters:
The professional must be licensed in your state of residence and have a legitimate therapeutic relationship with you.
What a Legitimate ESA Letter Contains
Valid ESA documentation includes:
Red Flags: Avoiding ESA Scams
AVOID these warning signs:
The only legitimate ESA documentation is a letter from a licensed mental health professional with whom you have an established relationship. Services like RealESALetter.com connect individuals with licensed professionals for proper evaluation and legitimate ESA letters when clinically appropriate.
ESA Rights: Where They Actually Apply
Legitimate ESA letters provide protections under the Fair Housing Act, allowing:
They do NOT provide access to restaurants, stores (including Costco), or commercial airlines.
Service dog handlers can make their Costco experience smoother with preparation and awareness of practical considerations.
Health and Grooming:
Equipment Check:
Timing Strategies:
Inside the Warehouse
Navigation Tips:
Managing Interactions:
Costco shoppers may approach wanting to pet or ask about your service dog. Polite responses include:
Common Challenges:
Checkout Considerations
Food Court Protocol
Service dogs are allowed in Costco food courts, but:
While federal ADA law provides baseline protections, some states offer additional provisions affecting service animals in retail environments.
California:
New York:
Texas:
Washington:
Hot Weather States (Arizona, Nevada, Southern California, Texas, Florida):
Cold Weather States (Minnesota, Wisconsin, Michigan, Northeast):
While Costco's corporate policy remains consistent, regional managers have discretion in handling situations:
Despite clear federal law, service dog handlers occasionally face challenges accessing Costco. Knowing your rights and proper response procedures protects your access and educates staff.
Here are the immediate response steps:
Now, let's find out what the escalation process is
If Denied by Management:
Prevention Through Education
Most access denials stem from staff misunderstanding rather than intentional discrimination. Consider:
When Costco Acts Appropriately
Remember that Costco CAN remove your service dog (but must still allow you to shop) if:
In these situations, Costco's actions are legally justified, and the issue lies with the service dog's behavior or training, not Costco's policy enforcement.
Pet owners who cannot bring their dogs into Costco have several alternatives for managing shopping trips without leaving companions at home all day.
Off-Premises Solutions
Planning Around Your Pet's Needs
Strategic Shopping Times:
Shorter, More Frequent Trips:
Pet Care Services:
Pet-Friendly Retail Alternatives
While you can't bring pets into Costco, these retailers welcome well-behaved dogs:
Home Improvement:
Pet Supply Stores:
Outdoor/Sporting Goods:
Other Retailers:
Always call ahead to confirm individual store policies, as they can vary by location and manager's discretion.
If you're considering getting an emotional support animal for housing accommodations, explore the best emotional support dog breeds.
The rise of fake service dogs—pets misrepresented as working animals—creates serious problems. These issues affect legitimate service dog handlers, businesses, and the animals themselves.
Impact on Legitimate Service Dog Handlers
Increased Scrutiny: When untrained pets cause incidents, businesses become skeptical of all service dogs, leading to:
Safety Risks: Untrained dogs posing as service animals may:
Public Perception: Behavioral incidents from fake service dogs damage public perception:
Consequences for Businesses
Costco and other retailers face challenges from fake service animals:
Legal and Criminal Penalties
States with criminal penalties for service dog misrepresentation include:
Fake service dogs that cause injury or property damage expose owners to:
Harm to the Animals
Dogs fraudulently brought into inappropriate environments suffer:
As a Business:
As a Shopper:
As a Pet Owner:
In conclusion, Costco’s dog policy reflects a balance between federal disability protections, food safety regulations, and customer experience. Only service dogs trained to perform disability-related tasks are allowed inside warehouses, and this rule is applied consistently across all locations in accordance with the ADA.
Understanding the difference between service dogs and emotional support animals helps prevent confusion and ensures smoother access for everyone. Service dog handlers should be aware of their rights and responsibilities, while pet and ESA owners can use alternatives such as curbside pickup or delivery.
Respecting Costco’s policies protects the integrity of service animal access and supports individuals who rely on legitimate service dogs, creating a fair and safe shopping environment for all members.
No, emotional support animals do not have public access rights under the ADA and are not permitted in Costco warehouses. Only service dogs specifically trained to perform disability-related tasks are allowed. ESAs are protected in housing situations under the Fair Housing Act but not in retail establishments.
No, the ADA does not require service dogs to wear vests, have special identification, or carry certification. Costco cannot deny access to a legitimate service dog that lacks these items. While many handlers use vests to reduce public questions, they're optional accessories, not legal requirements.
Even trained service dogs occasionally have medical emergencies. If your service dog eliminates inside the store, immediately notify staff, help clean the area, and apologize.
While a one-time incident shouldn't result in future denial of access, repeated housebreaking issues may lead Costco to exclude the dog as not being properly trained, though you must still be allowed to shop without the animal.
Costco cannot remove a service dog for a single bark or brief disruption. However, if your dog is continuously barking, growling, or otherwise out of control and you cannot regain control, Costco may ask you to remove the animal. You must still be allowed to complete your shopping without the dog. Service dogs should remain calm and under control in public settings.
No, Federal ADA law does not specifically protect service dogs in training, but many states extend access rights to trainers working with dogs in training.
Check your state laws—states like California, New York, and Texas grant public access to service dogs in training. Costco typically complies with state-specific provisions when applicable.
No, Costco does not allow pets regardless of how they're transported. Small dogs in carriers, strollers, or purses are still considered pets and are prohibited.
The only exception is a service dog actively working for someone with a disability—service dogs should be on the floor working, not carried or in strollers except when medically necessary for the handler.
If you observe an animal that is clearly not a trained service dog (showing aggression, not under control, relieving itself indoors, or the owner admits it's a pet), you can discreetly notify a Costco manager.
Do not confront the person directly. Costco staff can ask the two permitted questions and enforce behavioral standards for all animals in the store.
Yes, Costco's service dog policy applies uniformly throughout the warehouse, including the food court, pharmacy, optical department, and tire center.
Service dogs are permitted in all these areas as they're part of the public accommodation. However, ESAs and pets remain prohibited in all sections of Costco facilities.
WRITTEN BY
Dr. Avery Langston
Dr. Avery Langston is a licensed clinical therapist with more than 12 years of professional experience in emotional support animal (ESA) assessments, mental health counseling, and evidence-based therapeutic interventions. With a strong foundation in clinical psychology and a passion for mental-health education, Avery has guided thousands of individuals through the ESA qualification process while promoting emotional healing and stability. As a senior content contributor for RealESALetter.com, Avery focuses on writing accurate, accessible, and legally informed articles on ESA rights, housing protections, and mental wellness. Her mission is to help readers understand their ESA benefits clearly and confidently, backed by real clinical expertise.
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