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.

My Dog Is Constipated & Throwing Up, What’s Wrong? Our Vet Answers

jack russell terrier dog vomiting outdoor

When your dog has two major health signs occurring simultaneously, they should see the vet. Constipation and vomiting together can be due to several potentially serious causes, with the main one being an intestinal obstruction. Visit your veterinarian if your dog isn’t having regular bowel movements or if they seem to be pained or strained when they do so. You should also go straight to the vet if your dog has vomited more than once or is showing any other clinical signs.

dogster paw divider

What Does Vomiting With Constipation Mean in Dogs?

There are many causes of constipation and of vomiting in dogs. Here are a few possibilities for each.

Constipation in Dogs

A constipated dog has difficulty passing feces or isn’t passing it as regularly as usual. They may strain or cry out when they try to do so. Constipation can be brought on by multiple factors, including dehydration, certain medications, inadequate exercise, parasites, or various things related to the colon, such as inflammation, nerve dysfunction, or masses that block passage. Constipation can also happen when a pup eats something that they shouldn’t have and develops an obstruction that partially or completely blocks feces from moving through.

a Great Dane pooping outside on grass
Image Credit: Victoria Rak, Shutterstock

Vomiting in Dogs

Vomiting is the stomach’s way of getting rid of something that’s unpleasant. Dogs may vomit when they eat something that they shouldn’t have and that is irritating, such as table scraps or spoiled food. Dogs can also vomit when they have a digestive illness that creates nausea or an upset stomach or when they’re experiencing something outside of the digestive system, such as liver or kidney disease.

Vomiting may also occur when a dog has an intestinal obstruction due to the irritation and backup of ingesta that has no place else to go.

If you are concerned about your pet’s well-being, we recommend you contact a veterinarian.

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 pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

dogster paw divider

The 4 Causes of Vomiting and Constipation in Dogs

There are a few commonalities between the two side effects that should be examined in further detail.

1. Intestinal Obstruction

If your pup is vomiting and constipated, you might suspect an intestinal obstruction, which means you should get them to a vet. Intestinal obstructions are emergencies and should be seen as soon as possible. They occur when an indigestible object is eaten and it can’t move through the digestive tract. Obstructions don’t always have to be caused by something big; linear objects like string or even a collar can also get lodged in the intestines.

When such things get stuck, they partially or completely block the ingesta coming up behind it from getting out. This can lead to straining to defecate and smaller than normal or infrequent bowel movements—signs common with constipation.

As things attempt to move along, vomiting can also start, possibly due to the irritation that the digestive system is going through and the backup of the digestion. Dogs may also have stomach pain, a decreased appetite, and dehydration if it’s been happening for a while.

See your vet immediately, as some obstructions can be resolved with medications, but others require surgery.

Dog vomit in the living room on the floor
Image Credit: Cunaplus, Shutterstock

2. Gastroenteritis

Gastroenteritis is the medical term for an upset digestive system. It typically means both the stomach and the intestines are going through something. Gastroenteritis has many causes, including infections, parasites, medications, or a change in diet—including eating something that they shouldn’t have.

With most cases of gastroenteritis, you will see vomiting and diarrhea, but some dogs may appear constipated after a severe bout of diarrhea. They may strain because they are still feeling the urge to defecate, but they may not pass any feces or only pass a small amount infrequently because the digestive tract has already emptied out.

You may also notice a fever, stomach pain, inappetence, and dehydration with gastroenteritis. See your vet as soon as possible to get the irritation under control.

dog digestive system
You are free to use this image but we do require you to link back to Dogster.com for credit.

3. Parasites

Parasites like heavy worm burdens not only harvest nutrition and blood from dogs, but they can also lead to constipation and vomiting. Puppies are especially prone to this issue due to their small size and the ability for adult worm bodies to form a ball that blocks the intestines.


4. Severe Constipation

Severe cases of constipation, of whatever cause, can lead to vomiting because the body can’t get rid of feces, potentially increasing toxins in the system and backing up digestion. If your dog is constipated, with or without vomiting, see a veterinarian to get the issue treated as soon as possible.

American Pitbull pooping in grass
Image Credit: LookerStudio, Shutterstock

divider dog paws 2 oct 2024

What Should I Do If My Dog Is Constipated and Vomiting?

The short answer is to see your veterinarian as soon as possible. Both issues can lead to major complications if they aren’t treated, and they can be caused by severe health problems that you want to get under control quickly. Make a note of any other signs that your dog may be showing, such as not eating, stomach pain, or a previous episode of diarrhea.

Your vet may need to do bloodwork, a fecal analysis, a urinalysis, or imaging, especially if they suspect that a foreign object is the culprit. Depending on the cause, your pup might need medications to help settle an angry digestive system or surgery to resolve an intestinal blockage. Some dogs may even require hospitalization to fix dehydration or to get severe vomiting under control.

Frequently Asked Questions (FAQ)

How Long Is It Okay for a Dog to Be Constipated?

Most vets will let a dog go 48 hours without a bowel movement before they request to see them. However, if your pup is showing other signs, such as vomiting, a fever, dehydration, or stomach pain, bring them in right away.

How Can I Relieve My Dog’s Constipation Fast?

Mild cases of constipation may be treated at home by increasing a dog’s water intake and possibly giving them fiber. Plain canned pumpkin, canned food, exercising, or encouraging water drinking can all help. However, if your dog has constipation with other signs or if the constipation isn’t relieved in 48 hours, see your vet.

Labrador Retriever pooping on the grass
Image Credit: Wasitt Hemwarapornchai, Shutterstock

divider dog paws 2 oct 2024

Conclusion

Vomiting and constipation often warrant a veterinary visit when they present by themselves. When they show up together, especially when accompanied by not eating, a fever, or stomach pain, visit your veterinarian immediately. You will want to get these issues corrected before they become severe and cause other potentially serious issues.


Featured Image Credit: Enrico Spetrino, 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

10 Benefits of Colostrum for Dogs: Our Vet Answers

Colostrum is the first milk produced by pregnant mammals, starting a few weeks before they give birth and continuing for a few days...

What to Do When an Off-Leash Dog Approaches Your Leashed Dog: Vet-Approved Tips

Regardless of the situation, having a strange and unleashed dog approach you and your dog can be quite frightening. Not knowing their temperament...

NSAID Panel Blood Test For Dogs: Our Vet Explains Necessity & Frequency

Non-steroidal anti-inflammatories (NSAIDs) are used to treat various issues in canines, from short-lived treatment like spay surgery pain to long-term use for osteoarthritis....

Can a Dog Smell Water? Canine Smell Capabilities Explored

Most of us know that dogs have an incredible sense of smell, but just how good is it? For instance, can dogs smell...

More related

How Do Dogs Fall Asleep So Fast? Vet-Reviewed Canine’s Sleep Cycle

Dogs have a plethora of skills and talents, but their ability to fall asleep in seconds flat is truly jealousy-inducing. How is it...

Can Dogs Eat Hamburgers? Vet-Reviewed Risks & FAQ

Are you barbecuing and wondering if you can feed your dog a hamburger? Or did they eat one, and you’re worried about their...

Are Dogs Allowed in Home Depot in 2025? Policies & Exceptions Explained

Dogs love being with you at all times, whether you’re chilling at home, doing DIY projects, or out shopping for supplies. Home Depot...

12 Pet Food Industry Statistics to Know In 2025: Trends, Market Size & Analysis

Note: This article’s statistics come from third-party sources and do not represent the opinions of this website. The pet food industry is a...

Keep reading

Can Dogs Eat Boba? Vet-Verified Facts & FAQ

Cool and refreshing with fun pops of tapioca starch, bubble tea originated in Taiwan in the 1980s. The tea beverage was introduced to America in Taiwanese shops on the California coast, but now has traveled all across the country where...

Can Dogs Eat Boba

How to Boil or Cook Ground Beef for Dogs: Vet-Approved Recipes & Tips

All pets need a well-balanced diet, and dogs need meat to thrive. Dogs have a specialized digestive system, powerful teeth, and a stomach adapted to dealing with meat and bones. Knowing that dogs need to eat meat is one thing;...

uncooked ground beef in glass bowl

Gravy Train Dog Food Review 2025: Recalls, Pros & Cons

Review Summary The best way to a dog’s heart is through their stomach, and feeding them nutritional and tasty food is a surefire way to make you their favorite person. Finding a brand that you and your dog likes can...

Dogster_Gravy Train Dog Food Review

9 Best Dog Foods for Seizures in 2025: Reviews & Top Picks

Seizures are a growing concern amongst dog parents and one that is understood as little by veterinarians as it is by dog owners. While there is debate on the cause and necessary treatment for seizures in dogs, there’s no doubt...

Dog beagle eating canned food from bowl in bright interior

What Meat Is Best for Dogs? Top Types Explained

If you’ve spent time looking at dog foods in the pet store recently, then you know just how many protein options there are on the market these days. It can be overwhelming to know what protein to pick for your...

owner feeding shih tzu with dog food

Can Dogs Eat Macadamia Nuts? Vet-Verified Facts & FAQ

Macadamia nuts are a common ingredient in nut mixes and desserts. They’re a tasty, creamy nut that is a source of multiple vitamins and minerals, as well as fiber and antioxidants. So, you might be tempted to share your macadamia...

Can Dogs Eat Macadamia Nuts

How Much Calcium Do Dogs Need? 6 Best Sources

We tell our children that if they want to grow big and strong, they better drink their milk. Dogs need calcium as we do, and having the right amount in their systems gives them stronger teeth, nails, bones, and coats....

Boxer with a bone

Can Dogs Eat Coleslaw? Vet-Verified Facts & FAQ

Coleslaw is a tasty side dish that typically makes appearances at cookouts and BBQ restaurants. If your dog likes to hang around when you’re cooking or eating, then they may want a taste of the foods on your plate, including...

Can Dogs Eat Coleslaw