Fullerton
Open nowOpen 24 hours, every day of the year
Two emergency hospitals, founded by 41 local veterinarians in 1975 and still independent. When our hours say we’re open, we’re open.


Open 24 hours, every day of the year
Weeknights 6pm to 7am, 24 hours on weekends and holidays
Pick what you’re seeing. If you’re still unsure, call. A real person on our team will tell you in a minute whether to come in now.
local veterinarians founded this hospital in 1975, so their patients would never be alone at night.
Fifty years later, we still work the way they meant us to: as the overnight shift of your family vet’s practice.
We’re independently owned, not part of a national chain, and every decision about your pet is made here in Orange County. When you leave, your pet’s records, X‑rays and test results go straight to your family vet, so their care picks up right where ours left off.
We don’t try to replace the vet who knows your pet best. We take care of tonight, and we hand them back.
The same equipment you’d find at a specialty center, in a hospital that still feels like a neighborhood practice.
Here’s exactly what to expect, from the moment you check in to the moment your pet goes home.
Walk in, or join from your phone. Your place shows on the board in our lobby, so you always know where you stand.
A registered veterinary technician sees your pet right away and decides how fast they need the doctor.
Bloodwork, X‑rays read by a board‑certified radiologist, and ultrasound, all here under one roof.
Oxygen, fluids, blood transfusions and emergency surgery when it’s needed. We explain each step before we take it.
We send everything to your family vet that night. You can see your pet’s records and X‑rays online too.
Other hospitals call us at night to take their surgeries, borrow a unit of blood, or send a patient who needs oxygen. Here’s why.
Our medical director is board certified in emergency and critical care. Few emergency hospitals outside specialty centers have one. She teaches our team the why, not just the what.
Plenty of hospitals can’t staff registered techs every night. We do, around the clock, and pay our whole team to keep earning certifications.
Many of our team have worked here ten years or more. At 3am, nobody is hunting for the right drawer.
Advanced sealing instruments shorten time under anesthesia for C‑sections, pyometras and spleen surgery.
Oxygen support many hospitals don’t have, and blood products ready for transfusions.
Other ERs post “no doctor tonight.” In ten years we’ve closed a hospital once, at the height of COVID.
Led by a board‑certified criticalist, and backed by registered technicians on every shift.

Board certified in emergency and critical care, a credential few emergency hospitals outside specialty centers have. She leads our medicine and teaches our team the why, not just the what.






An ER isn’t pricier than your family vet for the same work. It feels that way because a sick pet needs ten things at once. So we show you every one of them first.
Emergency exam
Then a written estimate before any test or treatment.
CareCredit, Scratchpay and Cherry accepted. No checks.
Send a patient over at closing and see every note, lab and image by morning. We’ll send them back to you when they’re ready.
Can’t remember your login? Watch the two‑minute setup video, or fill out the referral form without logging in.
And hospitalization is half off. Sending a patient for overnight fluids costs your client far less than they expect.
Email our medical director to talk through a tough case, at no charge.
Hosted upstairs in our conference room. Your whole team is welcome.
We went 24 hours because Fullerton’s family vets asked us to. We always do what the family vets need from us.

Ayda is our Dalmatian. You’ll find her on our chat, at our open houses and on almost everything we make. Dalmatians have long been the dogs of firefighters and first responders, and that’s who we are for Orange County’s pets.
Behind her is a team of about 60 people across both hospitals. Many have been here more than a decade. All of them would rather be here at 2am with your pet than anywhere else.
Each one has its own link, so you can save it, text it to family, or share it.
You’ll see us at local races, at our neighbors’ open houses and in the North Orange County chamber. All for the pets and their people.