Emergency Vet in O Fallon, MO
Vet Locator lists 6 emergency vets in O Fallon, Missouri, as of October 2026: Animal Emergency Clinic, North Main Animal Hospital, The Pet Doctor and 3 more. 5 of these were confirmed from the business's own website.
All 6 emergency vets in O Fallon
Map loads as you scroll. Tap to load it now.
North Main Animal Hospital
Veterinary clinic
1632 N Main St · O'Fallon, MO 63366
North Main Animal Hospital is a full-service veterinary practice in O'Fallon, Missouri, opened in 1999 and owned by two veterinarians. It offers wellness care, vaccinations, microchipping, dental care, surgery…
The Pet Doctor
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…
The Pet Doctor
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…
UrgentVet
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…
VCA All Creatures - Cloud Animal Hospital
Veterinary clinic
2205 Highway K · O'Fallon, MO 63368
This O'Fallon, Missouri location is part of the VCA network and treats cats, dogs, and small mammals such as rabbits, ferrets, and guinea pigs. Services include wellness exams, vaccinations, spays and neuters,…
Emergency Vet near O Fallon
Pet Pals Animal Hospital
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…
St. Peters Animal Hospital
Veterinary clinic
16 S Church St · St Peters, MO 63376 · 4.3 mi
Saint Peters Animal Hospital is a full-service clinic in Saint Peters, MO, serving dogs and cats with routine medical, surgical and dental care plus emergency and urgent visits. It offers in-house lab work, a…
Veterinary Emergency Group
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…
Pet Urgent Care of St Peters
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…
Quick answers
How many emergency vets are in O Fallon, MO?
Vet Locator lists 6 emergency vets in O Fallon, Missouri, as of October 2026: Animal Emergency Clinic, North Main Animal Hospital, The Pet Doctor and 3 more. 5 of these were confirmed from the business's own website.
What is emergency vet?
Emergency vets treat urgent and life-threatening problems outside normal hours, often around the clock. Expect a higher exam fee than a regular clinic. Call ahead when you can so the team is ready.
Are there emergency vets near O Fallon?
Outside O Fallon, the closest we list are Pet Pals Animal Hospital in St Peters (about 3 miles), St. Peters Animal Hospital in St Peters (about 4 miles) and Veterinary Emergency Group in St. Peters (about 5 miles).