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

How Does a Dog’s Stomach Flip: Vet-Verified Causes, Signs & Care

A dog stomach flip is a serious condition that affects a dog’s digestive system and is known by many different names, such as...

How to Help Your Restless & Pacing Dog at Night: 10 Vet-Approved Tips

As pet owners, we like to provide the best lives for our pets, and it can be upsetting when they start to act...

Male vs Female Brittanys: What’s The Difference (With Pictures)

The Brittany Spaniel is a popular hunting and sport dog worldwide. These dogs are intelligent and affectionate with family and have boundless energy...

How to Keep Your House Clean When a Dog Is in Heat: 10 Simple Tips

Dogs are known for their messy ways, and when one is in heat, the messiness can become even worse. If you’re a pet...

More related

Why Does Dog Food Smell Bad? Vet-Verified Facts & FAQ

Most pet food smells, and there’s no way around it. Any person who has ever owned a dog or cat can attest to...

Is Tea Tree Oil Safe for Dogs? Vet-Verified Toxicity & Safety Info

Tea tree oil is a common home remedy that can be used to treat everything from gum disease to acne in humans, but...

Purina vs. Pedigree Dog Food: 2026 Comparison, Pros & Cons

As a pet parent, you want only the best, healthiest food for your canine friend. However, there are so many choices out there...

Why Does My Dog Steal My Spot? 7 Possible Reasons & What to Do

Most dog owners have had the experience of getting out of a comfy spot on the couch for a quick trip to the...

Keep reading

What to Feed a Mother Dog After Giving Birth: Vet-Approved Options & Tips

After a mother dog gives birth to her puppies, she needs immediate dietary support. Birthing an entire litter takes a lot of energy, and she will continue to require an uptake in calories, fat, and protein as the pups grow...

mother-dog-with-her-puppies

Can Dogs Eat Cow Tongues? Vet-Verified Nutrition Facts & FAQ

Being a responsible pet owner can sometimes be a bit stressful! What is safe? What is toxic? What is the best diet for my dog? There is so much conflicting information out there that it can be difficult to know...

Can Dogs Eat Cow Tongues

11 Best Canned & Wet Dog Foods for Senior Dogs in 2026 – Reviews & Top Picks

As dogs age, their nutritional needs may change, just like in humans. While the Association of American Feed Control Officials (AAFCO) does not officially recognize a “senior” life stage as a separate entity in terms of nutritional requirements, many pet...

Senior dog eating dog food

Can Dogs Eat Ranch Dressing? Vet-Verified Nutrition Facts & Risks

Dogs like it when we share our food, which can have us continuously wondering if different foods are safe for them. A common item that people wonder about is if dogs can have ranch dressing. Unfortunately, you should try to...

Can Dogs Eat_ranch

Can Dogs Eat Pineberries? Vet-Reviewed Facts & FAQ 

Pineberries, with their quirky appearance resembling strawberries but with a hint of pineapple flavor, have certainly captured attention in the fruit world. But, what if your fur baby gives you those pleading eyes when you’re enjoying them? Good news: in...

Can Dogs Eat Pineberries

10 Best Dog Foods for Labradoodles in 2026 — Reviews & Top Picks

Whether you have just brought a Labradoodle into your home or are a long-time owner, you want the best for your pet. Providing complete nutrition is part of keeping your dog active and healthy. As large dogs, Labradoodles have different...

labradoodle lying on bench

Can Dogs Eat Bacon? Vet-Reviewed Health Facts & FAQ

If there’s an aroma guaranteed to get dogs drooling and gazing up at you with big, pleading eyes, it’s the smell of bacon cooking. As much as you may want to indulge your pooch, it’s wise to hold off on...

Can Dogs Eat Bacon

11 Best Dog Foods for Labs in 2026 – Reviews & Top Picks

When it comes to canine nutrition, we are learning how vital it is to our beloved dog’s overall health to feed them the very best. If you have a large breed like a Labrador, providing a well-balanced diet is essential...

Labrador dog eating