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

Share

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

Ask Dr. Paola- Help! My Dog’s Sleeping Habits Have Changed! (May 18, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

The Crate Setup Most Dog Owners Get Wrong (And How To Fix It!)

Most people assume that if their dog hates the crate, the crate is the problem. So they try a bigger one, a different...

1,500 Beagles Rescued from Wisconsin Lab Farm – Here’s Where They’re Going

You may remember that a few weeks ago, we reported on a tense situation at Ridglan Farms, Wisconsin, a facility infamous for housing...

Dogster’s Weekly Photo Contest Winners: Window Watchers (May 11, 2026)

Every week our team gets the privilege of sorting through our readers photos to choose what dogs will win this weeks contest! See...

More related

15 Awesome Maltese Haircuts and Hairdos (With Pictures & Grooming Tips)

One of the most exciting things about owning a Maltese is that there are so many hairdo possibilities! From cute, summery cuts to...

How Much Does It Cost to Own a Bull Terrier? 2026 Price Guide

Bull Terriers are very distinctive dogs, perhaps most famous for being the face of Target for many years. They are large and stocky...

13 Great Off-Leash Dog Parks in Phoenix, AZ, You Can Visit Today

You want to have your dog with you everywhere, and thankfully, there are many places you can do so in the States. But...

Why Do Dogs Sneeze When Excited? 5 Vet-Reviewed Reasons

Dogs sneeze for many of the same reasons we do, but it’s not common for us to sneeze when we’re about to leave...

Keep reading

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

Can Dogs Eat Chicken Bones? Vet-Verified Nutrition Facts & Risks

Chicken is the most popular protein in most American homes, thanks to its overall low cost and high nutritional value. Some people find even more value in their chicken by purchasing cheaper cuts of meat, like thighs or entire chickens....

Can Dogs Eat_chicken bones

11 Best Dry Dog Foods for Large Dogs in 2026 – Reviews & Top Picks

The market is flooded with hundreds of different dog food brands, all of which are advertising that they’re the healthiest and best fit for your dog. Finding a good brand of dog food is a challenge regardless of what type...

blue fawn pitbull eatin dry kibble from a bowl

10 Best Dog Foods for Shih Tzus in 2026 – Reviews & Top Picks

Shih Tzus don’t have their own specific dietary requirements, as such, but they are a very small dog breed so they need to get all of their nutritional requirements in a comparatively small amount of food and without too many...

shih tzu dog eating outdoors

Can Dogs Eat Sunflower Butter? Vet-Reviewed Facts & FAQ

This rich, delicious seed butter is often used by humans as an alternative to peanut butter or a topping that shines on its own. But can dogs eat sunflower butter too? Yes! Sunflower butter is a healthy treat for dogs...

Can Dogs Eat_Sunflower Butter

Should Dogs Eat the Rainbow? Vet-Reviewed Eating Tips for Canines

Dogs are often considered to be carnivores that require a meat-heavy diet. Still, there are some similarities between a dog’s diet and a human’s diet. However, they are not omnivores like we are. Dogs may benefit from eating the rainbow,...

Colorful assorted fruits and vegetables

How to Make Dog Treats to Sell at Home & Start a Business: 11 Tips

If there’s one thing we know about dogs, it’s that they absolutely love having as much food to eat as possible. It seems most dogs are willing to stuff just about anything in their gullet. So, you could make some...

Bone and paw-shaped dog treats on cookie sheet

How Much Food to Feed a Golden Retriever (Puppy & Adult Guide)

Feeding your Golden Retriever involves a lot of variables, many of which are largely dependent on the individual pup. Your dog may vigorously chomp down all of their kibbles the second they hit the bowl or may snobbishly languish around...

Golden Retriever eating

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Dogster Email Newsletter