Vets in O'Fallon, MO
🚨 Emergency care3 vet clinics in O'Fallon — including 1 with emergency services (marked in red). Call ahead for same-day availability; for after-hours crises, hit the red button.
Red markers = emergency clinics. Click a marker for details.
Animal Emergency Clinic
24/7 per posted hours
334 Fort Zumwalt Square, O'Fallon, MO 63366
Verified 2026-07-27
3079 State Hwy K, O'Fallon, MO 63368
Hours: Mo-Fr 07:30-18:00; Sa 08:00-13:00
Unverified listing — call ahead to confirm hours and availability.
2205 Highway K, O'Fallon, MO 63368
Hours: Mo-Fr 07:30-20:00; Sa 08:00-15:00; Su off
Unverified listing — call ahead to confirm hours and availability.