24/7 Emergency Vet in Denver, CO

Just come in — we're a walk-in emergency hospital, open 24 hours a day, and no appointment is ever needed. When your pet has an emergency, there's no time to book, and you shouldn't have to. Simply head straight to us at any hour, day or night, weekend or holiday. If you can, call (303) 555-0111 on your way so our team knows you're coming and can prepare, and so we can give you any immediate guidance for the drive. When you arrive, our team triages patients by how critical they are, so the most life-threatening cases are seen first — which occasionally means a short wait for a stable patient while we handle a crisis, exactly as you'd want if it were your pet in danger. But you never need to make an appointment, and you'll never be turned away in an emergency. Save our number in your phone now so it's ready if you ever need it.

When in doubt, call us — it is always okay to check, and we'd far rather reassure you than have you wait on something serious. That said, some signs mean you should come in immediately: difficulty breathing; trauma such as being hit by a car or a bad fall; collapse or inability to stand; seizures; suspected poisoning (chocolate, lilies for cats, xylitol, medications, antifreeze, rat bait, and more); a distended or bloated abdomen, especially with retching (a life-threatening emergency in dogs); inability to urinate, especially in male cats; uncontrolled bleeding; repeated vomiting or diarrhea; suspected broken bones; eye injuries; or any sudden, severe change in your pet's condition. Pain, extreme lethargy, or simply 'something is very wrong' are all worth a call too. Emergencies are frightening and it's not always obvious how serious something is — that's exactly why we're staffed 24/7 to answer the phone and to see your pet right away when it matters.

We're committed to being honest and transparent, even in the middle of a crisis — because the last thing a frightened pet owner needs is to feel taken advantage of. When your pet arrives, we assess them quickly and then provide a clear estimate for the recommended emergency treatment before proceeding, so you understand what's being done and what it costs. Emergency and critical care does cost more than routine daytime care, because it requires a fully staffed team, ICU, and equipment available around the clock, but we will always explain the options honestly, including when a less intensive approach is reasonable, and we never inflate or pad a bill because someone is scared. If cost is a concern, tell us immediately and we'll do our best to prioritize the most essential, life-saving care and discuss options with you. We also work with pet-insurance and third-party financing where it helps. Our goal is to save your pet and to treat you fairly while we do it.

Absolutely, and we consider it an essential part of good emergency care. We are not trying to replace your primary-care veterinarian; we're here for the nights, weekends, holidays, and critical situations they aren't open for. Once your pet is stabilized and through the emergency, we send a full record of everything we did — diagnostics, treatments, medications, and recommendations — to your regular vet so they can seamlessly continue your pet's care. If your pet needs ongoing treatment or recheck visits, we coordinate that handoff and make sure nothing falls through the cracks. This close cooperation means your pet gets the best of both worlds: round-the-clock emergency expertise when it's needed, and the continuity of their trusted family vet for everyday care. If you don't yet have a regular veterinarian, we're glad to recommend excellent primary-care hospitals in the Denver area once your pet is on the mend.

Stay as calm as you can, and call us at (303) 555-0111 immediately — talking to our team on the phone lets us give you guidance specific to your situation and prepare for your arrival. In general: for trauma, keep your pet as still as possible and support them gently when moving them; for suspected poisoning, bring the packaging or a photo of what they ate if you safely can; for bloat, breathing trouble, seizures, or collapse, come straight in without delay. Try not to give any food, water, or medication unless we advise it, as it can complicate treatment. Then drive safely to us — a second accident helps no one. Our team will be ready when you arrive and will take over the moment you're through the doors. You don't have to know what's wrong or what to do next; that's our job. Your job is simply to get your pet to us, and we'll handle the rest with speed and compassion.

Lumen Animal Emergency is at 1490 S Colorado Blvd in central Denver, easily reachable from Cherry Creek, Wash Park, Glendale, Aurora, Lakewood, Englewood, Littleton, and Centennial. We are open 24 hours a day, seven days a week, 365 days a year — every night, every weekend, and every holiday, without exception. There are no hours to check and no closures to worry about; whenever your pet needs emergency care, we are open and staffed with a full emergency and critical-care team. We'd genuinely encourage every pet owner in the Denver area to save our address and phone number now, before you ever need them, because in a real emergency you won't want to be searching. We hope you never have to visit us — but if the worst happens, at any hour, know exactly where to go and that we'll be ready and waiting to help your pet the moment you arrive.