Here are the major U.S. online retailers that commonly sell Natural Balance dog & cat food (with examples of what they offer). Availability and specific formulas can vary by product and ZIP code, so check each retailer’s product page or Natural Balance’s Where To Buy tool for item-level stock.

• Natural Balance (brand) — official “Where to Buy” / retailer finder (useful for product- and store-specific availability). (naturalbalanceinc.com)
• Chewy — full Natural Balance selection; autoship/subscriptions available. (chewy.com)
• Petco — wide assortment of Natural Balance dry & wet foods; in-store pickup and same‑day delivery options in many areas. (petco.com)
• PetSmart — carries Natural Balance for dogs and cats; offers curbside/in‑store pickup, same‑day delivery and Autoship for eligible items. (petsmart.com)
• Amazon — many Natural Balance SKUs (one‑time purchase + Subscribe & Save options). (amazon.com)
• Walmart — Natural Balance products available online (delivery / pickup where eligible). (walmart.com)
• Target — lists Natural Balance items online with pickup/same‑day delivery in many locations. (target.com)
• Pet Supplies Plus — Natural Balance product pages with delivery, curbside pickup and autoship options. (petsuppliesplus.com)
• PetCareRx and similar online pet pharmacies/retailers — also stock Natural Balance (autoship/refill options). (petcarerx.com)
• 1‑800‑PetMeds — carries multiple Natural Balance formulas and offers AutoShip. (1800petmeds.com)

If you’d like, I can check a specific formula or a retailer’s current price/stock for your ZIP code (I will need the product name and your ZIP to look it up).