Vet Locator lists 5 urgent care vets in O Fallon, Missouri, as of October 2026: Gentle Doctor Animal Hospital, O'Fallon Veterinary Medical Center, The Pet Doctor and 2 more. 5 of these were confirmed from the business's own website.
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Veterinary clinic
3079 Highway K · O'Fallon, MO 63368
Gentle Doctor Animal Hospital is a full-service veterinary clinic in O'Fallon, Missouri, caring for cats and dogs in St. Charles and St. Louis Counties. It offers wellness exams, vaccinations, dental care, surgery,…
Veterinary clinic
975 Cool Springs Industrial Dr · O'Fallon, MO 63366
O'Fallon Veterinary Medical Center is a veterinary practice in O'Fallon, Missouri, offering wellness exams, vaccinations, surgery, dental care and urgent care. Clients can request appointments through the website,…
Veterinary clinic
3046 Winghaven Blvd · O'Fallon, MO 63368
AAHA accreditedCat Friendly Practice
The Pet Doctor is a veterinary practice in O'Fallon, Missouri, offering preventive, diagnostic, dental, surgical, chiropractic and rehabilitation care for dogs and cats. It is an AAHA-accredited hospital and a…
Veterinary clinic
2301 Technology Dr · O'Fallon, MO 63368
AAHA accreditedCat Friendly Practice
The Pet Doctor is a veterinary hospital in O'Fallon, Missouri, offering preventive care, dental work, surgery, diagnostics, chiropractic and rehabilitation for dogs and cats. The practice is AAHA accredited, a…
Veterinary clinic
2963 State Hwy K · O'Fallon, MO 63368
Fear Free
UrgentVet's O'Fallon clinic provides same-day, after-hours urgent veterinary care for cats and dogs, including on weekends and holidays. Walk-ins are welcome and visits can also be booked online. The clinic offers…
Veterinary clinic
7464 Mexico Rd · St Peters, MO 63376 · 3.5 mi
Fear Free
A family-owned veterinary hospital in Saint Peters, MO, offering wellness care, surgery including TPLO, dentistry, sick and urgent care, and house calls. The practice emphasizes a fear-free approach, offers hospice…
Emergency & specialty hospital
250 Mid Rivers Mall Circle · St. Peters, MO 63376 · 4.6 mi
This 24-hour emergency animal hospital in St. Peters, Missouri treats dogs, cats, birds, reptiles, small mammals and other pets without appointments. Services include surgery, endoscopy, on-site imaging and in-house…
Veterinary clinic
6002 MO-94 · Weldon Spring, MO 63304 · 4.7 mi
Tender Care Animal Hospital in Weldon Spring, Missouri, provides medical, dental, surgical and urgent care for cats and dogs, with an in-house lab and cold laser therapy. It is accepting new patients and offers…
Veterinary clinic
5913 Mexico Rd · St Peters, MO 63376 · 5.4 mi
Pet Urgent Care of St. Peters is a privately owned veterinary facility offering walk-in emergency and urgent care for dogs and cats. It provides in-house lab testing, digital X-rays, dental care, soft-tissue…
Vet Locator lists 5 urgent care vets in O Fallon, Missouri, as of October 2026: Gentle Doctor Animal Hospital, O'Fallon Veterinary Medical Center, The Pet Doctor and 2 more. 5 of these were confirmed from the business's own website.
Veterinary urgent care handles same-day problems that can't wait for a regular appointment but aren't full emergencies: vomiting, limping, ear infections, minor wounds. Usually cheaper than an emergency hospital.
Outside O Fallon, the closest we list are Pet Pals Animal Hospital in St Peters (about 3 miles), Veterinary Emergency Group in St. Peters (about 5 miles) and Tender Care Animal Hospital in Weldon Spring (about 5 miles).