Emergency vets in Thorold, Ontario
1 clinic in Thorold 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.
Niagara Veterinary Emergency Clinic
3300 Merrittville Highway, Unit 1A, Thorold, Ontario L2V 4Y6
Verified 2026-08-10
Nearest emergency hospitals outside Thorold
~52 km away · 🚗 ~44 min drive · in Hamilton
East Mountain Animal Hospital
Hamilton, Ontario
Unverified listing — call ahead to confirm hours and availability.
~55 km away · 🚗 ~46 min drive · in Oakville
Clarkson Village Animal Hospital
804 Southdown Road, Oakville, Ontario
Unverified listing — call ahead to confirm hours and availability.
~55 km away · 🚗 ~46 min drive · in Burlington
Beattie Animal Hospital
1231 Appleby Line, Burlington, Ontario L7L 5H9
Verified 2026-07-27
~56 km away · 🚗 ~46 min drive · in Mississauga
Clarkson Village Animal Hospital
1659 Lakeshore Road West, Mississauga, Ontario
Verified 2026-07-27
~57 km away · 🚗 ~48 min drive · in Hamilton
Emergency Animal Clinic
505 King Street West, Hamilton, Ontario
Verified 2026-07-27
~58 km away · 🚗 ~48 min drive · in Mississauga
Mississauga Oakville Veterinary Emergency Hospital
2285 Bristol Circle, Mississauga, Ontario
Hours: Mo-Su 00:00-23:59
Verified 2026-07-27
Emergency cover in Thorold, explained
One practice in Thorold 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.
Suspected poisoning: Pet Poison Helpline (855) 764-7661 (24/7, consultation fee applies). Call on the way in — they can start treatment advice before you arrive.