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Our Story

Fur the Love of Fetch and Forests.

Bark Balls started with one dog, one ball, and one question: where do these go when they’re done?

Incubated at Harvard Innovation Labs
Natalie Ball in a van surrounded by bags of collected tennis balls
Collecting balls
Tilly with BARK BALLS spelled out in tennis balls
Tilly, Chief Fetch Officer
The Bark Balls team courtside at the Dallas Open
The Dallas Open
Natalie Ball on a tennis court with a tennis ball
On the court
Tilly Ball, Bark Balls Chief Fetch Officer, lying in the grass with a tennis ball
How It Started

The Dog Who Started It All

I’m Natalie Ball, and yes, with a last name like that, maybe this was always meant to be. My dog Tilly lives for fetch, and she always picked a real tennis ball over any store-bought ‘dog ball.’ While I was at Harvard, working as a nurse practitioner at a community center in Boston, I asked what they did with their old tennis balls. They told me, ‘We throw them out, and we feel terrible about it.’ That night I sat straight up in bed: Bark Balls.

What started with balls piling up in my basement (my landlord joked about ‘another Harvard student starting a business down there’) has grown into more than 50,000 tennis balls given a second life, shipped to dogs in all 50 states. Tournaments like the Dallas Open now set their match balls aside for us, and every pack gives back to animal shelters and environmental causes.

One ball, one bark at a time.

Our Impact

What We’ve Done So Far

We’re a for-profit social enterprise, not a charity. Every operational decision is made to keep us sustainable so we can keep the mission going — long-term.

50,000+
Tennis balls given a second life
20,000+
Tennis balls collected in 2025 alone
700+
Orders
All 50
States shipped to
Our Pack

Meet the Leadership Pack

The humans turning waste into wags — one fetch at a time.

Natalie Ball, Founder

Natalie Ball

Founder
Denver, Colorado

Natalie is the founder of Bark Balls, where she blends her love of dogs, sustainability, and bringing people together around simple ideas that make a difference. She believes the best solutions often start with an unexpected question — and the curiosity to follow where it leads. When she’s not dreaming up Bark Balls’ next partnership, you’ll find her exploring Colorado with her goldendoodle, Tilly, hunting down a good cup of coffee, or — true to her last name — surrounded by tennis balls. And yes, Ball really is her last name.

Linda Ball, Community & Collection Lead

Linda Ball

Community & Collection Lead
Chicago, IL

Linda helps keep the Bark Balls mission moving — one tennis ball at a time. A passionate paddle and pickleball instructor and racquet sports enthusiast, she has a knack for building relationships and rallying her community around a good cause. Whether she’s collecting used tennis balls, connecting with local facilities, or spreading the word wherever she goes, Linda helps transform waste into wags. As Natalie’s mom, she’s supported the Bark Balls vision from the very beginning — proving that sustainability is truly a family affair.

Serena Bailet, Head Bark Baller

Serena Bailet

Head Bark Baller
Stamford, Connecticut

Serena helps turn waste into wags. She’s the one collecting tennis balls, packing East Coast orders, dreaming up social content, and capturing all the pawsome moments in between. Whether she’s behind the camera or knee-deep in tennis balls, Serena is helping Bark Balls grow its impact one fetch at a time. Her four-legged assistant? Roxy — Tilly’s cousin and an expert in the art of fetch.

Katie Otter, Growth & Partnership Lead

Katie Otter

Growth & Partnership Lead
Fort Collins, Colorado

Katie is the matchmaker behind Bark Balls’ growing network of partners. From answering donation inquiries to helping launch new collaborations with tennis facilities, tournaments, and community organizations, she helps transform big ideas into real-world impact. With a talent for building relationships and keeping all the moving pieces in play, Katie helps more tennis balls find their way from courts to canines. As Natalie’s cousin, she’s cheered Bark Balls on from the start — and now helps lead the charge.

Executive Leadership

And the Real Bosses

Every company answers to someone. Ours answer to two — and they personally inspect every shipment.

Tilly, Chief Fetch Officer, holding a dollar bill
Chief Fetch Officer
Tilly
Roxy, East Coast Fetch Assistant, with a tennis ball
East Coast Fetch Assistant
Roxy
Give a Bark™

Bark Like Trees, Bark Like Happy Dogs.

A portion of every purchase supports animal shelters, humane societies, and environmental causes — you choose at checkout.

Animal Shelters

Local shelters and rescues caring for dogs waiting on their forever homes — with a focus on partners who also collect balls for us. It’s circular giving.

Humane Societies

Regional humane societies running adoption, rescue, and animal-care programs in the communities we collect from.

Environmental Conservation

Organizations working on waste reduction, conservation, and circular-economy initiatives — keeping more out of landfills.

Incubated at Harvard Innovation Labs

Bark Balls was incubated through the Harvard Innovation Labs Student i-Lab Membership — validating our business model and sustainability framework with world-class mentorship.

Our Partners

In Good Company.

Bark Balls works with tournaments, clubs, schools, shelters, and pet businesses to give tennis balls a second life.

Tournaments

Dallas Open (ATP 500)Ball collection partner

Tennis Facilities

Gates Tennis CenterDenver, CO
JCC DenverDenver, CO
Northshore Racket ClubChicago, IL
Winnetka Park DistrictWinnetka, IL
Steamboat Tennis & PickleballSteamboat Springs, CO
Glenview Tennis ClubGlenview, IL
Army Navy Country Club TennisArlington, VA
XS Tennis & Education FoundationChicago, IL

Universities & Schools

Northwestern UniversityEvanston, IL
University of DenverDenver, CO

Animal Shelters

Humane ColoradoDenver, CO
Colorado Pet PantryColorado

Pet Businesses

Hike DoggieCO · TN · GA · NM · ID · VA

Want to be on this list?

We’re always looking for tennis facilities, tournaments, schools, and dog-friendly businesses to partner with.

A Pack Member hugging her dog at a tennis court
Play with Purpose

Ready to Give a Ball a Second Life?

Shop Bark Balls, send us your used tennis balls, or partner your facility. Every action keeps more balls in play.

We’d love to partner with more tournaments, facilities, and players to give every tennis ball a second life. Less Waste. More Wag.

Partner With Us
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