Few things are more stressful for pet owners than suddenly discovering your dog has diarrhea. While an occasional upset stomach may not be serious, diarrhea in dogs can sometimes point to an underlying illness that needs veterinary attention. At Mixed Pet Veterinary Hospital, we help dogs throughout Charlotte experiencing digestive issues, loose stool, vomiting, and other urgent symptoms.

Knowing what causes diarrhea in dogs, what symptoms to watch for, and when it’s time to see a veterinarian can help your dog recover more quickly and avoid complications.

Common Causes of Diarrhea in Dogs

There are many reasons diarrhea in dogs can occur, ranging from mild digestive upset to more serious medical conditions.

Eating Something They Shouldn’t

One of the most common causes of diarrhea in dogs is dietary indiscretion, meaning your dog ate something they shouldn’t have. Trash, spoiled food, table scraps, plants, toys, or outdoor debris can all irritate your dog’s digestive tract.

Sudden Diet Changes

Switching your dog’s food too quickly can disrupt the balance of healthy bacteria in the digestive system and lead to diarrhea in dogs. New foods should be introduced gradually over 7–10 days.

Parasites

Parasites are another common cause of diarrhea in dogs, especially in puppies or dogs that spend time at parks, daycare, or boarding facilities.

Common intestinal parasites include:

• Giardia
• Roundworms
• Hookworms
• Coccidia

Stress or Anxiety

Stress-related diarrhea in dogs can happen after travel, boarding, loud noises, schedule changes, or separation anxiety.

Food Sensitivities or Allergies

Some dogs develop chronic diarrhea due to food intolerances or allergies. Additional signs may include itchy skin, paw licking, or recurring ear infections.

Bacterial or Viral Infections

Infections such as parvovirus, salmonella, or campylobacter can cause diarrhea in dogs along with vomiting, lethargy, and dehydration.

Chronic Medical Conditions

Persistent diarrhea in dogs may also be linked to underlying conditions such as:

• Inflammatory bowel disease (IBD)
• Pancreatitis
• Liver disease
• Kidney disease
• Addison’s disease

7 Signs It’s Time to Bring Your Dog to a Vet in Charlotte, NC

Some cases of diarrhea in dogs resolve on their own, but others require prompt veterinary care. If your dog is experiencing these symptoms, it may be time to seek same-day veterinary care in Charlotte.

1. Diarrhea Lasts More Than Two Days

If loose stool continues for more than 48 hours, it’s time to call your veterinarian. Ongoing diarrhea in dogs can lead to dehydration and may indicate a more serious underlying issue.

2. There Is Blood in the Stool

Bloody diarrhea in dogs should never be ignored. Bright red blood or black, tarry stool can indicate bleeding in the digestive tract and requires veterinary attention.

3. Your Dog Is Vomiting Along With Diarrhea

Vomiting combined with diarrhea in dogs can quickly lead to dehydration, especially in puppies and senior dogs.

4. Your Dog Seems Weak or Lethargic

Low energy, weakness, excessive sleeping, or acting unusually tired may indicate your dog is becoming dehydrated or seriously ill.

5. Your Dog Stops Eating or Drinking

A loss of appetite or refusing water alongside diarrhea in dogs may signal a more severe condition that requires treatment.

6. Your Dog Has Abdominal Pain or Bloating

Signs of abdominal discomfort may include whining, pacing, stretching frequently, or a swollen stomach. These symptoms can indicate a more urgent medical issue.

7. Your Dog Is a Puppy, Senior, or Has Existing Health Conditions

Puppies, senior dogs, and pets with underlying medical conditions are at higher risk for complications from diarrhea in dogs and should be evaluated sooner rather than later.

What You Should Avoid When Your Dog Has Diarrhea

When your dog has diarrhea, certain foods and behaviors can make symptoms worse.

Avoid:

• Fatty or greasy foods
• Feeding large meals
• Offering too many treats
• Abrupt food changes
• Giving over-the-counter medications without veterinary guidance
• Allowing access to trash or outdoor debris

It’s also important to encourage hydration and monitor your dog closely for signs of dehydration.

How Veterinarians Diagnose Diarrhea in Dogs

Depending on your dog’s symptoms, your veterinarian may recommend:

• Fecal testing
• Parasite screening
• Bloodwork
• X-rays or ultrasound
• Parvo testing for puppies

These tests help identify the underlying cause of diarrhea in dogs and guide the right treatment plan.

Treatment for Diarrhea in Dogs

Treatment for diarrhea in dogs depends on the underlying cause and severity of symptoms. Your veterinarian may recommend:

• Bland diets
• Probiotics
• Deworming medication
• Prescription gastrointestinal food
• Fluids for dehydration
• Medications to reduce inflammation or infection

Many dogs recover quickly once the cause is identified and treated.

Same-Day Veterinary Care in Charlotte, NC for Diarrhea in Dogs

If your dog is experiencing diarrhea, the team at Mixed Pet Veterinary Hospital is here to help. We offer same-day and urgent care appointments for dogs in Charlotte, NC, and surrounding communities whenever possible so your pet can be evaluated quickly and start feeling better sooner.

Whether your dog has mild digestive upset or more concerning symptoms, our veterinary team can help determine the cause and recommend the right treatment plan. Contact us today to schedule a same-day or next-day appointment.