National Mutt Day is observed twice a year, on July 31 and December 2, a compassionate awareness day devoted to mixed-breed dogs. Also known as National Mixed Breed Dog Day, it celebrates lovable mutts while shining a light on the challenges they face in shelters.
When is National Mutt Day?
National Mutt Day is unusual in having two dates: July 31 and December 2. Both are fixed dates, landing on the same calendar days each year. In 2026 July 31 falls on a Friday and December 2 falls on a Wednesday. The founder deliberately chose two dates so that awareness of mixed-breed dogs and the need for adoption would be spread across the year rather than concentrated in a single day.
History and origin of National Mutt Day
National Mutt Day has a clearly documented origin. It was established in 2005 by Colleen Paige, a celebrity pet and family lifestyle expert, author and animal behaviorist who has spent her career advocating for animal welfare. She is also known for founding several other pet-focused observances.
Paige created the day after recognizing that mixed-breed dogs were being euthanized in shelters at higher rates than purebred dogs, often simply because they were harder to identify or seen as less desirable. By establishing National Mutt Day, she hoped to shift public attitudes and encourage prospective owners to consider adoption rather than buying from breeders. Over the years the observance has grown into an internationally recognized event embraced by shelters, rescues and dog lovers well beyond its origins in the United States.
Why National Mutt Day matters
Mixed-breed dogs make up a large share of the animals waiting in shelters, yet they are frequently overlooked in favor of specific breeds. National Mutt Day directly addresses that imbalance by celebrating what makes mutts special and urging people to give them a chance.
The day also carries a practical, life-saving message. Adoption relieves pressure on crowded shelters and gives deserving dogs a home. By pairing celebration with a clear call to action, National Mutt Day turns affection for dogs into real help for animals in need.
Mutts have plenty to recommend them beyond the cause itself. Because they draw from a wider gene pool, mixed-breed dogs often display a unique combination of looks, temperaments and traits that purebred lines cannot match, making each one genuinely one of a kind. Many are affectionate, adaptable and loyal companions, and shelters frequently have dogs of every age, size and energy level waiting for the right family. National Mutt Day encourages people to look past appearances and pedigrees and to recognize that a shelter dog can be just as loving and capable a companion as any purebred, if not more so. That message, repeated twice a year, keeps adoption in the public conversation across seasons.
How to celebrate National Mutt Day
- Adopt a mixed-breed dog from a local shelter or rescue.
- Donate money, food, blankets or supplies to an animal shelter.
- Volunteer your time at a shelter or rescue organization.
- Foster a dog that is waiting for a permanent home.
- Celebrate the mutt already in your life with a special walk or treat.
- Share adoptable dogs from local shelters on social media.
- Update your dog’s ID tag and microchip details while you are thinking about it.
- Spread the word using the day’s hashtag to encourage adoption.
Related days and observances
National Mutt Day joins many animal-focused celebrations, including National Dog Day, National Puppy Day, National Rescue Dog Day and Adopt a Shelter Dog Month. Broader animal-welfare observances share a close connection with the theme.
Fun facts
Mixed-breed dogs are sometimes said to benefit from greater genetic diversity, which can be associated with fewer inherited health problems common in some purebred lines. Because Colleen Paige set two dates, National Mutt Day is one of the few observances celebrated twice in a single year. The day is part of a wider set of pet holidays Paige created to promote animal adoption and welfare. Shelters and rescues often use the two dates to run adoption specials, fundraising drives and social media campaigns, turning the observance into a genuinely practical tool that helps real dogs find loving homes rather than serving as a symbolic day alone.
Frequently Asked Questions
When is National Mutt Day?
National Mutt Day is observed twice a year, on July 31 and December 2. Both are fixed dates set by the day's founder.
Who started National Mutt Day?
It was founded in 2005 by Colleen Paige, a celebrity pet and family lifestyle expert, author and animal behaviorist.
Why do we celebrate National Mutt Day?
The day celebrates mixed-breed dogs and raises awareness that mutts are often overlooked and euthanized in shelters at higher rates than purebreds.
How do you celebrate National Mutt Day?
People adopt a mixed-breed dog, donate to or volunteer at shelters, and celebrate the mutts already in their lives.
Is National Mutt Day a public holiday?
No. It is an awareness observance rather than a public or federal holiday, so it does not affect work or school schedules.
What is the hashtag for National Mutt Day?
The most common hashtag is #NationalMuttDay, often used with #MuttDay and #AdoptDontShop.