When to See a Vet: 12 Symptoms Dog Owners Shouldn't Ignore

Knowing when to call the vet and when to wait is one of the hardest parts of owning a dog. You don’t want to panic over every sneeze, but you also don’t want to dismiss something that matters. Here’s a straightforward guide to symptoms that warrant professional attention and how quickly you need to act.

Emergency: Go Now

These symptoms mean your dog needs a vet within the hour. Don’t wait for your regular vet to open; go to an emergency clinic.

1. Difficulty Breathing

Labored breathing, blue or grey gums, or gasping are emergencies. Brachycephalic breeds (Frenchies, Bulldogs, Pugs) are at higher risk because their shortened airways can collapse during heat, stress, or allergic reactions. If your dog is extending their neck, breathing with an open mouth, or making loud raspy sounds at rest, drive to the vet immediately.

2. Bloat (Distended Abdomen with Retching)

A hard, swollen stomach combined with unproductive retching (trying to vomit but bringing nothing up) can indicate gastric dilatation-volvulus (GDV). The stomach twists and cuts off blood flow. Large, deep-chested breeds like Great Danes, German Shepherds, and Standard Poodles are at highest risk. This is fatal without surgery, often within hours.

3. Seizures Lasting More Than 3 Minutes

A single seizure under 3 minutes, while scary, often resolves on its own. Time it. If it goes past 3 minutes, or if your dog has multiple seizures in a row without recovering between them (status epilepticus), that’s a neurological emergency. During a seizure, don’t put your hands near your dog’s mouth. Move furniture away and note the time.

4. Trauma with Visible Injury

Hit by a car, a fall from height, a fight with another animal that broke skin deeply. Internal injuries often don’t show symptoms immediately. Even if your dog appears fine after significant trauma, internal bleeding can develop over hours.

Urgent: Same-Day Vet Visit

These symptoms aren’t immediately life-threatening but shouldn’t wait until next week.

5. Vomiting or Diarrhea for More Than 24 Hours

One episode of vomiting or loose stool is usually nothing. But if it continues past 24 hours, your dog is losing fluids faster than they can replace them. Puppies and small breeds dehydrate faster than large dogs. If you see blood in the vomit or stool, move this to the emergency category.

6. Refusing Food for More Than 48 Hours

Healthy dogs occasionally skip a meal. Healthy dogs do not skip food for two consecutive days. Prolonged appetite loss signals pain, nausea, organ problems, or a foreign body obstruction. Small breeds and puppies should see a vet sooner since their blood sugar drops faster without food.

7. Sudden Limping or Inability to Bear Weight

If your dog goes from walking normally to holding a leg up, something is wrong. A torn cruciate ligament (ACL equivalent) is one of the most common causes in active dogs. Fractures, joint dislocations, and embedded foreign objects (glass, thorns) also present as sudden lameness. If your dog will still walk but favors a leg, a same-day visit is appropriate.

8. Eye Injuries or Sudden Cloudiness

Eyes deteriorate quickly without treatment. A scratched cornea, foreign object, or sudden cloudiness (which can indicate glaucoma) needs same-day attention. Brachycephalic breeds are especially prone to eye injuries because their eyes protrude more. If you notice your dog squinting, pawing at an eye, or if one eye looks different from the other, call your vet.

Monitor Closely: Call if It Worsens

These symptoms may resolve on their own but deserve observation.

9. Coughing That Lasts More Than a Few Days

Occasional coughing after drinking water too fast is normal. Persistent coughing, especially a honking cough in small breeds, can indicate kennel cough (usually resolves in 1-2 weeks), collapsed trachea (common in toy breeds), or heart disease (common in older dogs). If the cough is accompanied by lethargy or decreased appetite, see a vet sooner.

10. Excessive Water Consumption

If you’re refilling the water bowl noticeably more than usual, and it’s not connected to heat or exercise, increased thirst can signal diabetes, kidney disease, Cushing’s disease, or a uterine infection (in unspayed females). Track how much water your dog drinks for a couple of days and bring those numbers to your vet.

11. Changes in Urination

Straining to urinate, blood in urine, or having accidents in a previously house-trained dog all indicate something is off. Urinary tract infections are common and treatable, but a male dog straining to pee and producing nothing could have a urinary blockage, which is a same-day emergency.

12. Lumps That Appear or Change

Not every lump is cancer. Lipomas (fatty tumors) are extremely common in middle-aged and older dogs and are almost always harmless. However, any new lump should be checked by a vet. A lump that grows rapidly, changes color, ulcerates (breaks open), or is hard and immovable against the underlying tissue has a higher chance of being something that needs attention.

How to Prepare for a Vet Visit

Before you call, gather this information:

• When the symptom started
• Whether it’s getting worse, staying the same, or improving
• Your dog’s last meal (what and when)
• Any recent changes (new food, new environment, exposure to other dogs)
• Medications your dog is currently taking
• Photos or video of the symptom if it’s intermittent

Having this ready saves time during the call and helps your vet triage accurately.

Frequently Asked Questions

How do I know if it’s a true emergency or if I’m overreacting?

If your dog’s gum color has changed (white, blue, bright red, or grey instead of healthy pink), that’s always an emergency. Pale gums indicate blood loss or shock. Blue gums mean oxygen deprivation. Beyond color, trust your instincts. Vets would rather see a dog that turns out to be fine than hear about one that came in too late.

My dog ate something they shouldn’t have. Do I induce vomiting?

Do not induce vomiting without calling your vet or the ASPCA Animal Poison Control Center (888-426-4435) first. Some substances cause more damage coming back up (caustic chemicals, sharp objects). Your vet will tell you whether to induce vomiting, come in immediately, or monitor at home.

How much does an emergency vet visit cost?

Emergency vet visits typically cost $200-$500 for the exam and diagnostics. Treatments can range from $500 to several thousand depending on the issue. Pet insurance, if you have it, covers most of this after the deductible. If cost is a concern, many emergency clinics offer payment plans through CareCredit or Scratchpay.