What are the common causes of acute abdomen in dogs and cats?

Common causes include foreign body ingestion, intestinal obstruction, infection, pancreatitis, and gastrointestinal inflammation. Your vet will use blood tests, X-rays, or ultrasound to identify the cause, treat accordingly, and recommend follow-up care. Consult your vet for advice specific to your pet.

What examinations are typically performed at the clinic?

The vet will start with a thorough physical examination and blood biochemistry tests, and may arrange X-rays or abdominal ultrasound as needed. If ascites is present, a sample may be drawn for testing. The results will determine whether surgery or supportive therapy is required. Follow your vet's recommendations.

What can owners do to prepare before arriving at the clinic?

Record the number, timing, and contents of vomiting episodes; take videos of symptoms and bring vomit or stool samples; list current medications and note when symptoms started; and call the clinic ahead of time to speed up assessment. Avoid giving medications on your own, and follow your vet's instructions.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

We couldn't detect where you are, so we're showing this market. Pick yours so the nearby-clinic links point to the right place.

Disease Guide

Acute Abdomen in Dogs & Cats: Symptoms, Diagnosis & Care Guide [2025]

Acute abdomen is an emergency condition involving severe abdominal pain. It may indicate serious problems such as intestinal obstruction or gastric dilatation-volvulus (GDV) — seek veterinary care immediately.

Take 1 minute to check the symptoms first

Last updated: 2026/01/04

Pethealthmap Editorial Team

Sources: WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•Persistent and obvious difficulty breathing or labored breathing
•Continuous heavy vomiting that cannot be controlled
•Severe abdominal pain or rapid abdominal distension within a short period

Schedule a Clinic Visit Soon (Within 24–72 Hours)

•Occasional vomiting but still drinking and eating small amounts
•Abnormal bowel movements or blood in stool but otherwise alert
•Noticeably decreased appetite and reduced activity level

01What Symptoms Indicate a Problem?

Acute abdomen typically involves sudden changes related to the digestive tract or abdominal cavity, and may be accompanied by systemic distress or signs of shock. Close monitoring and prompt veterinary assessment are essential.

Frequent vomiting or vomiting blood
Persistent diarrhoea or bloody stools
Noticeable abdominal tenderness or resistance to touch
Abdominal distension suggesting ascites or bloating
Rapid heart rate, increased breathing rate, or weakness
Seek veterinary evaluation promptly if symptoms worsen suddenly

Seek emergency care immediately if you notice the following symptoms:

⚠️ Obvious difficulty breathing or gasping
⚠️ Continuous heavy vomiting or loss of consciousness
⚠️ Sudden severe abdominal pain or rapidly increasing abdominal distension

02How to Assess Symptoms at Home: Key Observations and When to Go to Emergency

Observing and recording key information at home can help your vet quickly understand the progression of illness and its possible causes.

Record the frequency, timing, contents, and whether vomit contains blood
Note when symptoms first appeared and how quickly they progressed
Monitor changes in alertness, appetite, water intake, and activity level
Record bowel movement frequency, stool consistency, and presence of blood
Use your phone to capture photos or videos of vomiting, the abdomen, or breathing
Bring all records, photos, and samples to the clinic for reference

03How Will the Vet Diagnose? Common Examination Procedures

Upon arrival, the vet will combine a physical examination with blood tests and imaging studies to assess whether emergency treatment or surgery is needed.

Physical examination

palpation to assess abdominal pain, swelling, and response

Blood and biochemistry tests

to evaluate dehydration, infection, and organ function

X-ray

to assess intestinal gas distribution, foreign bodies, or signs of obstruction

Abdominal ultrasound

to check for ascites, masses, or organ abnormalities

Advanced imaging (CT scan) or abdominocentesis as determined by the vet

04Treatment and Aftercare: Medications, Dietary Adjustments, and Care Guide

Treatment depends on the underlying cause and may include supportive care, medical management, or surgery. Regular follow-up is needed after treatment to confirm recovery.

Intravenous fluids and electrolyte support to address dehydration and circulatory status
Antimicrobial or symptomatic medications based on diagnostic findings
Some cases may require surgery to address foreign bodies, obstruction, or perforation
Post-treatment follow-up visits and blood monitoring as directed by your vet
Gradually reintroduce feeding and adjust diet and activity levels as advised by your vet

05What to Prepare Before Seeing the Vet: Key Information to Help Your Vet Act Quickly

Note the onset time and the sequence of symptoms as they developed

Bring a vomit or stool sample in a sealed container

List current medications, supplements, and any recent changes in condition

Prepare a symptom log, photos, or videos for the vet's reference

Call ahead to make an appointment and describe the symptoms and their severity

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.