When to See a Veterinarian Immediately: Emergency Signs
See a veterinarian immediately if your pet has difficulty breathing, uncontrolled bleeding, seizures, suspected poisoning, trauma, or sudden collapse. Also act fast for open-mouth breathing in cats, labored breathing, or any sudden severe change in behavior, appetite, mobility, or breathing.
When to See a Veterinarian Immediately: Emergency Symptoms
Some signs are clear emergencies. If your pet shows any of the following, seek veterinary care right away—do not wait to see if they improve.
- Difficulty breathing—Labored breathing, gasping, or extreme coughing or choking means your pet isn't getting enough oxygen.
- Uncontrolled bleeding—Pressure won't stop the flow, or blood is pooling. This includes bleeding from the nose, mouth, or rectum.
- Seizures—A seizure lasting more than a few minutes, or multiple seizures in a day, is an emergency.
- Loss of consciousness—Syncope (fainting) or collapse can signal heart, neurological, or metabolic problems.
- Suspected poison ingestion—If your pet ate something toxic like chocolate, grapes, xylitol, or rat poison, call your vet or a poison control hotline immediately.
- Trauma—Hit by a car, a fall from height, or a bite wound can cause internal injuries even if your pet looks fine.
- Sudden severe change—Any sudden or severe change in your pet's behavior, appetite, mobility, or breathing warrants immediate attention.
- Inability to urinate or defecate—Especially in male cats, a blocked bladder is life-threatening.
- Swollen, painful abdomen—This can indicate bloat (gastric dilatation-volvulus), which is fatal without rapid treatment.
- Eye injuries—Protruding eye, sudden blindness, or chemical exposure to the eye needs urgent care.
When to See a Veterinarian Immediately for Vomiting or Diarrhea
Vomiting and diarrhea are common, but they can become emergencies. Here's how to tell if you need to act now.
A good fit for immediate care if…
- Vomiting or diarrhea lasts more than 24 hours, or your pet is very young, old, or has a chronic condition.
- There's blood in the vomit or stool—bright red or black, tarry stool.
- Your pet is also lethargic, depressed, or has a fever.
- Your pet can't keep water down, leading to dehydration.
- You suspect your pet swallowed a foreign object or toxin.
- Your pet's abdomen is painful or distended.
Consider waiting (but call your vet) if…
- Your pet has one or two episodes but is otherwise acting normal, eating, and drinking.
- The diarrhea is mild and your pet is a healthy adult.
- You know the cause, like a diet change, and symptoms are mild.
When in doubt, call your vet. It's always better to be safe—dehydration and underlying conditions can turn serious quickly.
Dog and Cat Emergencies: When to See a Veterinarian Immediately
Some emergencies are species-specific. Here's a quick guide to what's critical for dogs and cats.
| Sign | Dogs | Cats |
|---|---|---|
| Breathing | Labored breathing, gasping, or extreme coughing | Open-mouth breathing (a red flag—cats rarely pant) |
| Urinary issues | Straining to urinate, blood in urine | Inability to urinate (blockage is fatal if untreated) |
| Seizures | Any seizure lasting >2 minutes or repeated | Same as dogs |
| Trauma | Hit by car, bite wounds, falls | Same as dogs, plus high-rise syndrome (falls from windows/balconies) |
| Breed-specific risks | Bloat (GDV) in deep-chested breeds like Great Danes | Heart disease (HCM) can cause sudden hind-leg paralysis |
If you see any of these signs in your dog or cat, don't wait—seek emergency veterinary care immediately.
Emergency Vet or Wait Until Morning? How to Decide
It's late, and your pet isn't acting right. Here's how to decide whether to rush to an emergency vet or wait for your regular clinic to open.
Go to the emergency vet now if…
- Your pet has difficulty breathing or loss of consciousness.
- There's uncontrolled bleeding or suspected poisoning.
- Your pet has a seizure or shows signs of severe pain.
- Your pet has been in an accident, even if they seem okay.
- Your pet is a puppy or kitten and has vomiting/diarrhea for more than a few hours.
It can likely wait until morning if…
- Your pet is eating, drinking, and acting normally.
- Symptoms are mild (e.g., one episode of vomiting) and improving.
- You can call your regular vet in the morning for advice.
If you're still unsure, call your vet's after-hours line or an emergency clinic. They can help you decide. Our team at Mellina Animal Hospital offers urgent care during business hours, and we recommend Fort Worth Animal Emergency Hospital for after-hours needs.
Signs of Pain: When to See a Veterinarian Immediately
Pets hide pain well, but certain signs mean they need help now.
Seek immediate care if your pet shows…
- Whimpering, howling, or growling when touched.
- Restlessness, pacing, or inability to get comfortable.
- Panting excessively (when not hot or exercised).
- Shaking or trembling.
- Limping or refusing to put weight on a limb.
- Hiding, aggression, or unusual behavior.
- Loss of appetite or reluctance to drink.
Consider a vet visit (not necessarily emergency) if…
- Pain is mild and your pet is still eating and moving.
- You notice a gradual change in activity over days.
If pain is severe or sudden, don't wait—call your vet or go to an emergency clinic. For more on recognizing pain, see our guide on [[signs-a-dog-is-in-pain-or-discomfort|signs a dog is in pain]].
What to Do When You Need to See a Veterinarian Immediately
- Stay calm—Your pet picks up on your stress. Take a deep breath.
- Call ahead—Phone your vet or the nearest emergency clinic so they're ready for you. If it's during our hours, call Mellina Animal Hospital at (817) 332-8179.
- Transport safely—Use a carrier for cats and small dogs. For larger dogs, use a board or blanket as a stretcher if they can't walk.
- Keep your pet warm—Cover them with a blanket, but don't restrict breathing.
- Don't give medication—Never give human meds; they can be toxic.
- Head to the clinic—We're at 2928 W 6th St, Fort Worth, TX 76107. For after-hours, go to Fort Worth Animal Emergency Hospital.
After an Accident: When to See a Veterinarian Immediately
If your pet has been hit by a car, fallen, or been in a fight, they need veterinary care even if they look fine. Internal injuries can be hidden.
- Assess safety—Approach carefully; injured pets may bite.
- Control bleeding—Apply pressure with a clean cloth.
- Immobilize—Keep your pet as still as possible to avoid worsening injuries.
- Call your vet—Let them know you're coming. If it's during our hours, call us at (817) 332-8179.
- Transport gently—Use a flat surface like a board or a carrier.
- Get to the clinic—Even if your pet seems okay, blunt force trauma can cause internal bleeding or organ damage that isn't obvious.
Not Sure? Take This Quick Quiz on When to See a Veterinarian Immediately
Answer these questions to help decide if your pet needs emergency care.
Ask yourself:
- Is my pet breathing normally? (Look for labored breathing, gasping, or open-mouth breathing in cats.)
- Is my pet conscious and responsive?
- Is there uncontrolled bleeding?
- Has my pet had a seizure?
- Could my pet have eaten something toxic?
- Has my pet been in an accident?
- Is my pet in severe pain or unable to move?
If you answered yes to any of these, seek veterinary care immediately. If you're still unsure, call us at (817) 332-8179—we're here to help during business hours, and we'll guide you on next steps.
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Frequently asked questions
How long should a dog have diarrhea before seeing a vet?
If diarrhea lasts more than 24 hours, or is accompanied by vomiting, lethargy, or blood, see a vet right away. Puppies and senior dogs can dehydrate quickly, so don't wait.
Is a UTI in a dog considered an emergency?
A urinary tract infection is usually not an emergency, but if your dog is straining to urinate and producing little or no urine, that's a blockage and is life-threatening. Seek immediate care.
What are 5 signs that it's time to put your dog down?
Deciding on euthanasia is deeply personal. Common signs include chronic pain unmanageable by medication, inability to eat or drink, loss of interest in favorite activities, breathing difficulties, and incontinence. Always consult your veterinarian for guidance.
Should I let my dog pass naturally or euthanize?
Natural passing can be peaceful, but sometimes it's prolonged and painful. Euthanasia is a humane option to prevent suffering. Talk to your vet about your dog's quality of life and what to expect.
Do dogs know they are being put to sleep?
Dogs don't understand the concept of euthanasia, but they feel the sedation and relaxation. The process is designed to be painless and peaceful. Your presence can comfort them.