Should I fast my dog or cat before a long journey?

A total fast is almost never necessary and is not advisable for every animal. The most useful approach is to give the main meal a few hours before departure, so digestion is under way before the movement, and to offer no food right before getting in. For animals badly affected by car sickness a longer gap helps, while water should never be withheld for long. On flights, follow the airline's specific guidance instead.

My animal will not drink during the trip, what do I do?

It is common: in a new setting many animals ignore water. Offer it anyway at every stop, in small amounts and in its usual bowl, which gives a familiar cue. You can make water more tempting by moistening a treat, or, for wet-food eaters, by offering water-rich food. If the refusal lasts many hours and signs of dehydration appear, stop and consider a vet consultation, especially in the heat.

Can I buy food along the way if I run out?

Better to avoid it. A different food, even a good one, can cause digestive trouble exactly when you are far from home. That is why you always allow a few reserve portions beyond the planned length. If you truly must switch, choose something similar in type and texture, introduce a small part mixed with what little you have left, and still expect a possible stomach reaction.

How often should I stop to let the animal drink?

A stop roughly every two hours is a good reference in normal conditions, and it should increase when it is hot or if the animal is panting. At each stop offer water and, for dogs, a chance to stretch and relieve itself. Do not follow the clock alone: watch the animal, because thirst and restlessness tell you whether the pace of breaks suits the journey and the temperature.

Travelling with pets25 minLevel: BeginnerUpdated on August 20, 2026

Managing your pet's meals and water on a journey

How to feed and hydrate a dog or cat on the move without car sickness or an upset stomach: meal timing, supplies, safe water and handling the heat along the way.

Audience: Pet owners
Species: Dog, Cat
Scope: Valid everywhere, Italy, European Union

What you need before you start

La razione abituale dell'animale e il nome esatto dell'alimento che usa a casa
Una ciotola pieghevole o portatile e una scorta d'acqua che conosci e che l'animale accetta
Il peso aggiornato dell'animale, utile per stimare acqua e porzioni durante il tragitto

On a journey the challenge is not finding food and water, it is handling them at the right moment. A meal given too close to departure invites car sickness, a water bowl left out the whole time tips over on every bend, and a different food bought at the last minute for convenience can trigger diarrhoea just when you are far from your own vet. The good news is that a handful of rules head off almost all of this: keep the same food, shift meal times around the driving, offer water often but in small amounts, and stay on top of the heat. This guide lays out what to prepare before you leave and how to behave along the way, whether you are doing two hours by car or a full day of travel.

Getting the supplies ready before you leave

The golden rule of travel meals is continuity: the same food, in the same amounts, on as similar a rhythm as possible. Switching food during a trip is the most common way to end up with an animal that has diarrhoea on the motorway. Prepare supplies in advance, allowing a few days beyond the planned length, because a delay or a hitch must not force you to buy an unknown product on the spot.

Regular food for every travel day plus two or three in reserve, same brand and recipe as at home.
Portions weighed out in advance in single bags, so each meal is ready and you never measure on the move.
Water the animal knows, to avoid a very different water upsetting its stomach.
A collapsible bowl for water and one for food, light and easy to clean.
A few familiar treats for the stops, without overdoing it so digestion stays light.

When to feed relative to the driving

Car sickness is worse on a full stomach. That is why the main meal should not be given right before getting in the car, but well ahead, so digestion is already under way when the movement starts. The table sums up a rough schedule to adapt to your animal and the length of the trip.

Indicative meal schedule for a car journey. Adapt it to the animal's habits: those prone to car sickness do better with longer gaps.
Moment	What to do	Why
3-4 hours before	Main meal, as normal	Digestion is under way before movement and nausea drops
At departure	A little water only, no food	A stomach that is not full makes the trip calmer
During stops	Water and at most a light treat	Keeps hydration up without weighing the stomach down
On arrival	Wait until it settles, then offer the meal	An animal still agitated eats badly and risks vomiting

Hydrating well without soaking half the car

Water matters more than food, especially in summer. An animal can skip a meal without harm, but it must not go long without drinking, and travel is exactly where the risk hides: nobody thinks about water until the animal is panting. The winning approach is not a permanently full bowl, which spills, but water offered often and in small amounts at the stops.

Offer water at every stop
Plan a break roughly every two hours and offer a drink each time. Many animals do not ask for water on their own in a new setting, so the initiative has to be yours.
Small amounts at a time
Repeated small drinks beat one big gulp, which on a moving stomach can cause vomiting. If it refuses, try again at the next stop without forcing it.
Bring its own water
Water very different from home can upset a sensitive stomach. Carrying your own supply removes the variable and frees you from the fountains along the route.
Watch for signs of dehydration
Tacky gums, lethargy and skin that returns slowly after a gentle pinch mean the animal needs to drink. In strong heat these signs deserve to be taken seriously.
Never block access to water on long stops
If a stop stretches out in the shade, leave the bowl within reach. The spilling risk applies while moving, not while parked somewhere cool.

Heat changes all the rules

In summer, feeding takes second place to temperature. A hot animal eats less, drinks more and slides more easily into heatstroke, which is a genuine emergency. Adapt meals and stops to the thermometer, not just the clock, and remember that the cabin heats up far faster than it looks.

Shift meals to the cooler hours, early morning and evening.
Increase the frequency of drinking stops when it is very hot.
Never leave the animal alone in the car, not even for a few minutes and not even in the shade.
If you notice heavy panting, thick drooling and weakness, stop and cool the animal with cool water, then find a vet.
Favour shaded parking for stops and air the cabin out before setting off again.

Adapting meals to the mode of transport

Car, train, ferry and plane impose different rhythms, and with them the way you handle food and water changes. The principle stays the same, but the practical constraints do not: on a flight you do not control the stops, on a ferry you may have dedicated areas, on a train it depends on the length and the changes.

By car you set the timing: plan meals and stops and make the most of that flexibility.
By train carry water and a collapsible bowl, offer a drink at the stations and cut the meal before departure.
By ferry check where you can let the animal drink and stretch, and prepare water for the hours it will spend in a dedicated area.
By plane follow the airline's guidance: for long flights fasting beforehand is often advised, while water is provided according to the carrier's rules.
In every case, restore the usual meal rhythm as soon as you arrive, to help the animal find its bearings again.

On a journey you do not need to feed more, you need to feed more regularly: predictability is what keeps a disoriented animal's stomach calm.
Good practice for managing pets on the move

Frequently asked questions

Should I fast my dog or cat before a long journey?: A total fast is almost never necessary and is not advisable for every animal. The most useful approach is to give the main meal a few hours before departure, so digestion is under way before the movement, and to offer no food right before getting in. For animals badly affected by car sickness a longer gap helps, while water should never be withheld for long. On flights, follow the airline's specific guidance instead.
My animal will not drink during the trip, what do I do?: It is common: in a new setting many animals ignore water. Offer it anyway at every stop, in small amounts and in its usual bowl, which gives a familiar cue. You can make water more tempting by moistening a treat, or, for wet-food eaters, by offering water-rich food. If the refusal lasts many hours and signs of dehydration appear, stop and consider a vet consultation, especially in the heat.
Can I buy food along the way if I run out?: Better to avoid it. A different food, even a good one, can cause digestive trouble exactly when you are far from home. That is why you always allow a few reserve portions beyond the planned length. If you truly must switch, choose something similar in type and texture, introduce a small part mixed with what little you have left, and still expect a possible stomach reaction.
How often should I stop to let the animal drink?: A stop roughly every two hours is a good reference in normal conditions, and it should increase when it is hot or if the animal is panting. At each stop offer water and, for dogs, a chance to stretch and relieve itself. Do not follow the clock alone: watch the animal, because thirst and restlessness tell you whether the pace of breaks suits the journey and the temperature.

What to do next

Set off with the same food as at home and a few reserve portions already weighed out, give the main meal several hours before moving and not right before getting in. Offer water often and in small amounts at every stop, bringing the water the animal knows, and adapt everything to the heat and the mode of transport. As soon as you arrive, restore the usual meal rhythm to help the animal find its bearings.