Welcome to Pet Supply Outlet!
We are a locally and family-owned and operated pet store for over 25 years. Pet Supply Outlet was created as an outlet for the best pet supplies at great prices. We look forward to seeing you soon!
24/7 Online Ordering With In-Store Pickup


The Best Pet Brands in Belmont
We offer all the best pet food brands for your pet. All of our brands are sold with our guarantee that if your pet doesn't like the food, bring it back and swap for a different one! View some of our high quality & all-natural brands below.
24/7 Online Ordering With In-Store Pickup
CURRENT & UPCOMING DEALS
Print off a coupon and bring it into Pet Supply Outlet to get deals on the best pet supplies to help keep your pet healthy and happy!

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Like Pet Supply Outlet on Instagram for great photos of our local pets, store updates, new pet products, deals, events, and more!
What Our Customers Say
We love all of our local pet parents from Belmont and nearby areas including Arlington, Medford, Malden, Somerville, Cambridge, Boston, Brookline, Newton, Watertown, Waltham, Lexington, Acton, Concord, and more!
Here's what you need to know: 1. For all items I checked, their prices were identical to Amazon/Chewy. 2. They are super nice--the gentleman at the desk combed through all the cat food trying to help me find something without chicken products for my sensitive-tummied Siamese cat, Bernard. We ended up finding an all-fish Orijen dry food and a pumpkin/tuna wet packet from Weruva. Bernard gives PSO 9 stars out of 5 (he's not the best with numbers).