Emergency vets in St. Peters, MO
1 clinic in St. Peters advertise emergency or 24-hour care. Call first: ER availability and wait times change by the hour.
Red markers = emergency clinics. Click a marker for details.
VEG ER for Pets - St. Peters
250 Mid Rivers Mall Circle, St. Peters, MO 63376
Verified 2026-09-26
Nearest emergency hospitals outside St. Peters
~5 miles away · 🚗 ~15 min drive · in O'Fallon
Animal Emergency Clinic
334 Fort Zumwalt Square, O'Fallon, MO 63366
Verified 2026-07-27
~10 miles away · 🚗 ~19 min drive · in Wentzville
Animal Talk Medical Center
12678 Veterans Memorial Pkwy, Wentzville, MO 63385
Hours: 24-hour emergency available
Verified 2026-07-28
~19 miles away · 🚗 ~25 min drive · in Brentwood
Veterinary Emergency Group
2101 South Brentwood Boulevard, Brentwood, MO 63144
Verified 2026-09-26
~33 miles away · 🚗 ~45 min drive · in Collinsville
Animal Emergency Center
2005 Mall St, Collinsville, IL 62234
Hours: Mo-Th 18:00-08:00; Fr 18:00-Mo 08:00
Verified 2026-07-27
~35 miles away · 🚗 ~48 min drive · in Edwardsville
Hawthorne Animal Hospital
5 Cougar Dr, Edwardsville, IL 62034
Unverified listing — call ahead to confirm hours and availability.
~84 miles away · 🚗 ~1 hr 41 min drive · in Springfield
Animal Emergency Clinic of Springfield
821 S Durkin Dr, Springfield, IL 62704
Verified 2026-07-28
Emergency cover in St. Peters, explained
One practice in St. Peters offers emergency services, and one posts 24-hour hours. Phone before you set off in every case. Hospitals divert when their ICU is full, overnight staffing changes, and posted hours are the first thing to go stale in any directory — including this one.
Before you drive: what "emergency", "24-hour" and "out-of-hours" actually mean, the symptom triage list, and what happens when you arrive.
Not an emergency? See all 9 vet clinics in St. Peters →
General-practice vets often take same-day urgent appointments during business hours, and most can refer you to an after-hours ER.
Suspected poisoning: ASPCA Animal Poison Control (888) 426-4435 (24/7, consultation fee applies). Call on the way in — they can start treatment advice before you arrive.