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Kicking off National Pet Month, Amazon launched its first-ever Pet Day sale today, May 2. The one-day event includes deals on pet food, treats, grooming tools, household cleaning supplies, and some over-the-counter medications.

We often see big pet discounts on Prime Day, but these Amazon Pet Day deals extend to products that aren't usually discounted during sale events. Other retailers like Chewy and Target are price-matching, but you can save even more on products like pet food and treats by signing up for Amazon's Subscribe and Save, with discounts of up to 15% off when you set up automatic deliveries.

Frontline Plus, one of our top recommendations for dog and cat flea control, is discounted 40%, a rare deal. Before adding any pet food or medication to your cart, be sure that it says it is sold and shipped by Amazon to ensure you're purchasing authentic products. Third-party sellers are risky choices, particularly because there have been complaints about counterfeit Seresto collars in the past. For pet medications, we recommend checking out retailers like Petco and Petsmart, which acquire medications directly from the manufacturer.

© Provided by Business Insider Bissell SpinWave Robot VacuumThe Bissell SpinWave Robot Vacuum picked up all the pet hair on carpet in our tests and has a great assortment of mop attachments and accessories. The company is also committed to helping homeless pets and helps them find loving homes.$339.99 FROM AMAZON Originally $399.99 | Save 15%$339.99 FROM TARGET Originally $399.99 | Save 15%

Gallery: Shop the Best Pre-Deals from Amazon's HUGE Pet Day Sale (Good Housekeeping)

© Provided by INSIDER Lesure Tall Cactus Cat Scratching PostThis 34-inch tall sisal scratcher will appeal to cats who like to climb, claw, and bat. The cactus-shaped scratching post has a ball attached to the top.$42.99 FROM AMAZON Originally $49.99 | Save 14%

© Provided by INSIDER Rocco & Roxie Professional Strength Stain & Odor EliminatorRocco & Roxie Professional Strength Stain and Odor Eliminator is nontoxic, safe for carpet and fabrics, and permanently eliminates odor.$13.38 FROM AMAZON Originally $19.97 | Save 33%$13.38 FROM CHEWY Originally $19.97 | Save 33%

© Provided by INSIDER Blue Buffalo Life Protection Formula Chicken and Brown Rice Recipe (30-lb. bag)The main protein sources in this recipe are deboned chicken and chicken meal. Standout carbohydrates include brown rice, barley, oatmeal, peas, sweet potatoes, carrots, blueberries, and cranberries. Healthy extras include omega fatty acids (flaxseed) and glucosamine. We recommend it for moderately active, normal-weight dogs, with 24% protein, 14% fat, and 5% fiber. One cup is 378 kcal.$48.95 FROM AMAZON Originally $62.99 | Save 22%$48.95 FROM CHEWY Originally $46.50 | Save 5%$48.95 FROM PETCO Originally $64.99 | Save 25%

© Provided by INSIDER GoPets Infinity Lounge Cat ScratcherThis scratcher has a unique wavy design so cats can scratch at many different angles.$23.99 FROM AMAZON Originally $29.99 | Save 20%

© Provided by INSIDER Greenies Dental Cat TreatsAvailable in four delicious flavors, Feline Greenies Dental Cat Treats clean your cat's teeth as he munches.$3.29 FROM AMAZON Originally $5.99 | Save 45%

© Provided by INSIDER Outward Hound Fun Feeder Dog BowlThe Outward Hound Fun Feeder Dog Bowl slows down dogs that eat too fast, decreasing the likelihood of choking, vomiting and bloat.$11.46 FROM AMAZON Originally $16.49 | Save 31%

© Provided by INSIDER Aquapaw Shower Sprayer Scrubber Pet Bathing ToolThe slim and flexible design allows you to comfort your dog with both hands while you bathe them like you're petting them. This unique style of bathing reduces spraying water, speeds up bath time, and helps to lessen stress for your anxious pup.$21.20 FROM AMAZON Originally $24.95 | Save 15%$21.20 FROM CHEWY Originally $24.95 | Save 15%$24.95 FROM PETCO

© Provided by INSIDER Dremel 7300-PT 4.8V Pet Nail Grooming KitWith two speed settings and an assortment of interchangeable heads, the Dremel 7300-PT Pet Nail Grooming Tool is safe and easy to use.$25.49 FROM AMAZON Originally $34.99 | Save 27%$25.49 FROM CHEWY Originally $34.99 | Save 27%$25.49 FROM WALMART Originally $34.99 | Save 27%

© Provided by INSIDER Catit Senses 2.0 Cat Flower FountainCatit's Flower Fountain provides continuously flowing water to entice your kitty to drink. It holds 3 liters of water and includes a filter.$22.39 FROM AMAZON Originally $27.99 | Save 20%

© Provided by INSIDER Virbac Epi-Otic Advanced Ear CleanerEar cleaners contain a range of ingredients that help to break up waxy build-up, dry out the ear canals, and help kill bacteria and yeast, while being designed to be gentle on the ear.$9.83 FROM AMAZON Originally $11.63 | Save 15%$9.83 FROM CHEWY Originally $11.56 | Save 15%

© Provided by INSIDER Petsafe 3-in-1 HarnessThe Petsafe 3-in-1 Harness fits dogs of all sizes well, and with two places to clip the leash, it functions as both a traditional and no-pull dog harness.$25.95 FROM AMAZON Originally $37.99 | Save 32%$25.95 FROM CHEWY Originally $37.99 | Save 32%