What can cause dogs and cats to vomit or become anxious in the car?

Common causes include motion sickness, stress from the car environment such as movement or noise, or an existing health problem. If signs happen often or occur with weakness or food refusal, a veterinary check is recommended.

What can I do at home to reduce my pet's car travel anxiety?

You can start with short, low-stress car trips, use a secure carrier, provide familiar items and allow a calm resting space. When safe, record a video or note your pet's reactions for your vet to review.

What information should I prepare when taking my pet to the vet?

Bring records of vomiting times and frequency, photos or videos of the vomit or travel behaviour, recent feeding and medication details, and any previous test results to help your vet assess your pet.

Does car travel anxiety need a behaviour specialist?

If basic checks have ruled out a physical medical problem but the issue still happens frequently, a veterinary behaviour specialist assessment and longer-term behaviour therapy may be helpful.

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

Car Travel Anxiety in Dogs and Cats: Vomiting, Restlessness, Checks & Care [2025]

Car travel anxiety is common in dogs and cats and may occur with motion sickness. Desensitisation training and medication can help.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap Editorial Team

Sources: AVMA, WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Immediate Emergency Care

•Continuous vomiting that cannot stop on its own
•Obvious difficulty breathing or open-mouth panting
•Lethargy that is difficult to rouse, with significantly dulled responsiveness

Schedule a Clinic Visit Soon (within 24–72 hours)

•Persistent excessive drooling with obvious agitation
•Vomiting or repeated dry heaving on every car ride
•Prolonged loss of appetite or significantly reduced water intake

01What signs suggest something is wrong?

During car travel, pets may show both physical and behavioural reactions, often with vomiting or appetite changes. Watching for these signs helps you judge how serious the problem may be.

Frequent vomiting or retching, sometimes bringing up food or stomach fluid
Excessive drooling, panting or seeming unsettled and unable to stay still
Persistent whining, scratching at the carrier or trying to escape the car space
Reduced appetite or refusing food during the trip or after arriving at the clinic
Lower activity levels, sleepiness or slower responses than usual

Seek emergency care immediately if you notice the following symptoms:

⚠️ Repeated vomiting and unable to keep water down, or suspected dehydration
⚠️ Very sleepy, hard to wake or noticeably less responsive
⚠️ Obvious breathing difficulty or abnormal gum or lip colour

02How can you assess the problem at home? Key observations and emergency warning signs

Keeping key observations at home helps your vet understand the situation faster and decide what tests or treatment may be needed.

Record the time, number and spacing of each vomiting episode in a simple table
Take photos and describe the vomit colour, and whether it contains blood or foreign material
Observe mood and behaviour, such as restlessness, sleepiness or changes in responsiveness
Track any increase or decrease in appetite and water intake, including food refusal
Note whether urination and bowel movements are normal and whether the frequency changes
Bring your notes, photos and videos, if available, to the appointment for your vet to review

03How will the vet diagnose it? Common tests and checks

After arrival, the vet will perform a basic physical examination and any necessary laboratory or imaging tests to look for possible causes of vomiting or anxiety.

Physical examination

assessing hydration, pulse, mucous membrane colour and abdominal palpation

Blood tests

checking blood cell values and indicators of dehydration or infection

Biochemistry profile

assessing whether organs such as the liver and kidneys are functioning normally

Urinalysis

ruling out metabolic or urinary tract problems

X-rays or abdominal ultrasound

checking for gastrointestinal obstruction or organ abnormalities

A clinic or hospital with imaging and blood-testing capability may be recommended for further work-up

04How is it treated and managed after diagnosis? Medication, diet changes and care

Care focuses on easing vomiting and anxiety, adjusting diet and monitoring progress. Behavioural assessment or specialist follow-up may be recommended when needed.

Short-term feeding adjustments, such as smaller, more frequent meals and a low-irritation, easily digestible diet
Behaviour management for motion sickness or anxiety, with medication support when needed
Home care focused on keeping the carrier environment stable and reducing movement and noise
Regular follow-up as advised by your vet to monitor weight, blood results and symptom changes
Referral to a veterinary behaviour specialist may be arranged if further behavioural assessment is needed

05What should you prepare before seeing the vet? Key details that help identify the cause

Bring a record of vomiting times, frequency and what was brought up

Prepare photos of the vomit or a sample if it is safe and practical to bring

Record when the problem started and the car conditions or feeding situation at the time

List all current medications, supplements and any known allergies

If available, bring a video taken during car travel so the vet can observe behaviour and responses

Phone ahead to book a clinic appointment that can assess car travel anxiety-related concerns

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.