What are the common routes of liver fluke infection in dogs and cats?

Liver flukes are commonly contracted by ingesting metacercariae-containing aquatic animals, contaminated plants, or unclean food. Avoiding raw food and preventing your pet from eating wild aquatic animals can reduce the risk.

What tests will the vet perform to confirm liver fluke infection?

Common tests include fecal microscopy, blood biochemistry, and a complete blood count to assess liver function and inflammation. Abdominal ultrasound or further imaging may also be arranged if needed.

If I suspect my pet has liver flukes, can I treat them at home?

Home treatment is not recommended. Please take your pet to a vet for a proper examination and diagnosis before any treatment is prescribed and follow-up care arranged.

How can I prevent my dog or cat from getting liver flukes?

Avoid feeding raw aquatic animals or raw food, keep your pet's diet and drinking water clean, and schedule regular fecal tests and routine parasite prevention to reduce the risk of infection.

How much do the tests and treatment usually cost?

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

Disease Guide

Liver Fluke Infection in Dogs & Cats: Symptoms, Diagnosis & Treatment Care [2025]

Liver fluke infection is transmitted through raw freshwater fish and shellfish, affecting the hepatobiliary system and requiring antiparasitic treatment.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap editorial team

Sources: CAPC, WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek immediate veterinary care (emergency)

•Persistent heavy vomiting with inability to take in water
•Copious, unrelenting diarrhea or obvious signs of dehydration
•Persistent yellowing of the skin or mucous membranes of the eyes with lethargy

Schedule a clinic visit soon (within 24–72 hours)

•Intermittent vomiting but still able to drink water and be briefly active
•Soft stool or occasional diarrhea lasting several days with fair energy
•Reduced appetite but still eating small amounts, with slightly lower activity

01What symptoms indicate a problem?

Liver fluke infection commonly presents with gastrointestinal symptoms and changes in energy and behaviour, with severity depending on the degree of infection and any complications.

Lethargy, reduced activity, or excessive sleepiness
Poor appetite, refusal to eat, or a noticeable decrease in food intake
Repeated vomiting or intermittent diarrhoea with changes in stool consistency
Gradual weight loss and noticeable loss of body condition
Changes in drinking or urination habits, possibly accompanied by signs of dehydration
If you notice any of these signs, arrange an internal medicine or hepatology consultation as soon as possible

Seek emergency care immediately if you notice the following symptoms:

⚠️ Persistent severe vomiting with inability to keep fluids down
⚠️ Significant loss of appetite with rapid weight loss
⚠️ Persistent yellowing of the skin or eye membranes (jaundice) with lethargy

02How to assess your pet at home? Key observations and when to seek emergency care

These are items you can observe and record at home to help your vet assess your pet's condition and plan diagnostics.

Record daily changes in energy and activity levels (when they started and how severe)
Note changes in appetite, the amount eaten at each meal, or any periods of food refusal
Count the number of vomiting and diarrhoea episodes and the intervals between them
Weigh your pet daily and log weight changes, recording at least every few days
Take photos or video of the stool and urination for reference
Bring a fresh stool sample to your appointment and book in advance

03How will the vet diagnose this? Common diagnostic tests

Your vet will use blood tests, fecal examination, and imaging to confirm infection, assess liver function, and identify any complications.

Complete blood count (CBC)

to assess for anaemia or changes in inflammatory markers

Blood biochemistry panel

focusing on liver enzyme levels and metabolic status

Urinalysis

to evaluate kidney function and check for dehydration or metabolic abnormalities

Fecal microscopy or flotation/sedimentation

to identify parasite eggs or other pathogen indicators

Abdominal ultrasound or X-ray

to assess liver size and structural changes

Tissue biopsy or advanced CT scan if needed for further evaluation

04How to treat and care for your pet after diagnosis? Medication, dietary adjustments, and care guide

Treatment is guided by your vet's assessment and typically includes antiparasitic medication, supportive care, and regular follow-up monitoring.

Your vet will evaluate your pet and prescribe appropriate medication with a follow-up treatment schedule
Short-term anti-emetic medication and fluid support to improve overall condition
Feed an easily digestible, low-fat diet and gradually adjust based on your pet's response
Attend scheduled follow-up visits as directed to monitor blood biochemistry and clinical signs
Repeat fecal or imaging tests as needed to confirm treatment effectiveness
If symptoms do not improve or worsen, return to your vet promptly or seek specialist referral

05What to prepare before your vet visit? Key information to help your vet diagnose quickly

Note the onset date, progression, and frequency of symptoms

Prepare a log of appetite changes, vomiting episodes, and bowel habits

Bring a fresh stool sample, or provide photos or video of the stool

List all current medications and supplements your pet is taking

Bring any previous test reports or imaging results to the appointment

When booking by phone, mention that stool testing and liver-related diagnostics may be needed

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.