Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can Dogs Get Stomach Bugs? Vet-Verified Facts & FAQ

sick overweight dog lying on the floor

So, you come home to find your pup lethargic and not acting themselves. After a few moments, you notice they are dry heaving overtop your favorite rug. They were fine this morning so what could have happened in between?

Did they eat something they shouldn’t? Do they have a virus? Do they have some type of tummy bug? In this article, we are going to go over some gastrointestinal problems in dogs so you can understand better.

divider single dog paw oct 2024

Dogs Can Get Stomach Bugs

Dogs can get all kinds of different bacteria, viruses, and general upset from spoiled food items and the environment. Anything our dog ingests has the potential to upset them if they have sensitives, allergies—or they just ate something that shouldn’t be in the belly.

Different stomach upsets may have similar signs, making it hard to figure out what bug you’re dealing with.

beagle dog sick sad on bed
Image Credit: Iryna Imago, Shutterstock

What Is Gastroenteritis? 7 Possible Causes

Gastroenteritis is an inflammation of the gastrointestinal tract. It can have several causes, so it is merely a sign of an underlying condition. It can cause a series of signs, but usually the most obvious are vomiting are diarrhea.

While tummy upset can stem from a variety of issues—here are a few major reasons.

1. Bacteria

Bacteria can get into the gut via consumption or ingestion. Certain bacteria are harmless while others, like Salmonella, cause gastroenteritis. Raw food is one such source of bad bacteria1. These microscopic troublesome critters can really wreak havoc on the system. Usually, bacteria infections require antibiotics to get your dog’s body back in order although sometimes a combination of the immune system and healthy gut bacteria can resolve the issue.


2. Viruses

Viruses are living organisms that infiltrate your dog’s system and cause overall upset. Many stomach bugs are viruses and generally must run their course. Antibiotics usually don’t work for viruses. Instead, they often have to run their course with supportive care as needed. Canine parvovirus and canine enteric coronavirus are two viruses that cause gastrointestinal upset, with parvovirus being much more serious and potentially deadly.

Sick and unhealthy yellow Labrador Retriever dog coughing in a park or Kennel cough symptom
Image Credit: Dhanoo Surasarang, Shutterstock

3. Parasites

We are advised to treat our dogs for parasites for a reason—they are a real problem. Intestinal worms can cause gastroenteritis. It is imperative that we treat our dogs with regular parasite prevention—ridding them of ticks, fleas, and worms. You can get these treatments online or at your vet or local shelter. Some of them may differ in effectiveness, so make sure to check reviews and ask for recommendations.

Other parasites, like Giardia, are not covered by parasite prevention and can be picked up in the environment. In these cases, fecal testing and appropriate veterinary treatment are needed to clear the infection.


4. Medications

If your dog is on a new medication, some can absolutely cause some stomach upset. Often these medications can be hard on the system. If you are concerned, you can read the side effects on the bottle or call your vet for advice.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our online service where you can talk to a vet online and get the advice you need for your dog — all at an affordable price!

PangoVet_Mention-in-Content Savings V1


5. New Foods

If you have introduced new foods to your dog’s diet and notice some major stomach problems, it might be the food. Switching foods too quickly or introducing new food to a sensitive pup can trigger systemic reactions.

Make sure you transition food slowly to avoid any stomach upsets. Dogs’ healthy gut bacteria adapt to new food, and it may take a week to transition most dogs properly2. If your dog seems sensitive, go slower. If they don’t recover, discontinue the new recipe and consult your vet.

Sick Rhodesian ridgeback dog not eating
Image Credit: Zontica, Shutterstock

6. Ingestion of Spoiled Material

Clearly, if your dog eats spoiled food, they won’t be feeling too hot. Say they got into the trash or snatched up a fly-covered piece of food on the sidewalk during an evening stroll—they might have some GI upset later.

Spoiled food can contain mold or toxins that can make your dog seriously sick. Some examples include botulinum, mycotoxins, and aflatoxins. The way it affects your dog’s system can depend on the amount consumed, their age, and overall health status.


7. Food Allergies

What is interesting is that allergies are not all sneezes and snotty noses. They can also manifest as gastrointestinal upset—particularly when they relate to food. If it seems like your pup’s tummy is always gurgling and such, it might be a reaction to food.

If you suspect that your dog might have food allergies, keep in mind that you might have to go through extensive food trials to uncover the reason. Your vet might be able to perform allergy tests to find the trigger, too.

divider dog paws oct 2024

Can People Get Stomach Bugs from Dogs?

Humans can get some infectious diseases from their pets. These transmissible pathogens are called zoonotic diseases. Luckily, this is very rare, but it is something to consider when your pup is feeling ill.

Transmissible Diseases Between People and Pets

Our dogs can share all sorts of wonderful things with us—but one not-so-wonderful thing is a string of gastrointestinal bacteria.

Campylobacteriosis

Dogs can carry Campylobacter, which is a genus of bacteria. It is highly contagious and can easily infect not only people but also other animals—including cats. Typically, it is passed through fecal matter particles.

dachshund sick dog vet
Image Credit: SeventyFour, Shutterstock

Leptospirosis

Leptospirosis is a terrible bacterial infection that can greatly impact dogs and people alike. It is generally passed through urine, drinking contaminated water, or exposure to contaminated soil.

Salmonella

Salmonella is a very common bacteria that is transmitted through contaminated food and surfaces. Dogs usually get salmonella by eating contaminated feces or meat and can pass it along to humans.

divider dog paws 3 oct 2024

Conclusion

So, yes, our dogs can get a stomach bug just like us. Some of them are transmissible to humans while others are species-specific. If you think your dog might have a stomach bug, you should make them a vet appointment.

While it could be something super easy to fix or something that might pass, dehydration is real. So, even in the best-case scenario, they need some supportive care!

See also: 


Featured Image Credit: Taps Das, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.


How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

What Are the Best Materials to Use for a Dog Bowl? Top 5 Options

If you have a new pet, one of the first things you are likely going to want to buy is a bowl for...

How to Get Rid of Fishy Smell From Your Dog: 6 Vet-Verified Reasons & Tips

A dog that smells fishy is considered unusual, and a fishy smell usually comes from your dog’s mouth, skin, ears, or perianal or...

Havapoo Lifespan: Average Years & Vet-Reviewed Tips

A mix of the Havanese and Miniature Poodle, the Havapoo is an adorable, friendly, and often allergy-friendly crossbreed that’s growing in popularity. These...

10 Vet-Verified Havanese Facts: The Happy-Go-Lucky Pup

The Havanese is a bubbly, inquisitive, and playful breed with a flowing, wavy coat characterized by a silky texture. Known as the ultimate...

More related

Building the Unstoppable Ranch: Helping Dogs in Need of Rehab & Support

In a time when there is so much uncertainty, negativity, and horror in the world, the uplifting stories of survival and kindness are...

Belgian Mastiff Dog Breed: Info, Pictures, Temperament & More

The Belgian Mastiff is an imposing breed with an awe-inspiring presence and a history rooted in strength and loyalty. Many people are looking...

What & When Is National Responsible Dog Ownership Day? (2026 Update)

Taking care of your dog should be a given for all pet owners, but unfortunately, we’ve all fallen prey to making irresponsible decisions...

Lumps After Dog Vaccinations: Are They Normal? Our Vet Explains Why This Happens

Pebbles had her vaccinations a week ago Saturday. She received rabies, DHLPPC, and Bordetella. I discovered today that Pebbles has a round lump...

Keep reading

Can Dogs Eat Cardamom? Is It Safe? Vet Reviewed Dietary Guidance

If you’re a dog owner and a fan of flavorful spices, you might be wondering whether it’s safe to share your love for cardamom with your furry friend. Cardamom is a popular spice used in various cuisines worldwide and is...

Can Dogs Eat_Cardamom

Nature’s Logic Dog Food Review 2026: Pros, Cons, Recalls, and FAQ

Review Summary Nature’s Logic was founded in 2006 by Scott Freeman. Freeman conjured up dog food that uses 100% natural ingredients without using cheap, synthetic vitamins. In 2005, the first batches of dry dog and cat food were sent to...

Dogster_Nature’s Logic Dog Food Review

10 Best High Fiber Dog Foods for Constipation in 2026 – Reviews & Top Picks

If you have a pup who is constantly constipated on your hands, then you’re likely desperate for a solution (especially if nothing you’ve tried thus far seems to have helped). That’s where high fiber dog foods come in. Though it’s...

german shepherd dog lying near food bowl

Can Dogs Eat Flour Tortillas? Vet-Verified Nutrition Facts & Info

Our dogs can enjoy quite a few items we have in our fridge or ripening on our counter. They delight in fruits, vegetables, and grains the same as any human. However, when it comes to processed foods with multiple ingredients,...

Dogster-Can-Dogs-Eat-Flour Tortillas

8 Foods for Dogs That Reduce Inflammation: Canine Health & Wellness

Inflammation is not always a bad thing. It happens when your dog’s body is trying to heal from an illness or injury. It is a crucial response that is meant to protect the body. But when inflammation becomes chronic and...

West Highland White Terrier dog at home eating

Hill’s Science Diet Dog Food Review 2026: Pros, Cons, Recalls & FAQ

Review Summary Most people are somewhat familiar with Hill’s Science Diet dog food, which has been around since the 1930s. That’s when Morris Frank—a man promoting the concept of using dogs to enable the blind—met Dr. Mark Morris, Sr. Frank’s...

Dogster_Hill’s Science Diet Dog Food Review

10 Best Dog Travel Bowls in 2026  – Reviews & Top Picks

Dogs often make some of the best travel companions. With so many dog-friendly places to visit, you can plan all kinds of trips with your dog. When traveling with your dog, it’s important to pack several essential supplies to make...

Border collie puppy drinking water from bowl in a park

Vitamin K for Dogs: 5 Vet-Approved Food Sources

Vitamin K is a necessary nutrient for all humans and animals. In addition to making this vitamin within our bodies, we can get the vitamin from the foods that we eat, and so can your dog! Here are five great...

white samoyed dog looks at a plate of vegetable salad