Traveling With a Dog: How to Do an Overland Trip With Your Pet

Taking the dog on an overland trip is one of the most common, and most underestimated, decisions among people who hit the road. Most Brazilian overlanders who have a pet do not even consider leaving it behind: the dog is part of the family core, and the trip only makes sense with it along. The question is not whether to take it, but how to take it without turning the trip into heavy logistics or compromising the animal's well-being.

This article covers the practical points for anyone traveling with a pet through South America by car, van, motorhome, or 4x4. Most of the information also applies to cats, although the daily routine is different. For other species (rabbit, bird, reptile), similar principles apply but with country-specific rules not covered here.

In short: traveling with a dog through South America by car requires preparation on three fronts: paperwork (international CVI from MAPA, microchip, up-to-date vaccines, recent parasite treatments), vehicle (a safe space for the dog, ventilation, accessible water), and routine (frequent stops, shade, food and lodging that accept pets). Start the vet process 30 to 45 days before the trip.

Is it worth taking the dog?

Before diving into logistics, here is the honest question.

It is worth it when:

• The dog has an adaptable temperament (likes car rides, does not have extreme anxiety, accepts new places).
• The trip is long enough to justify the preparation. A short trip is only worth it if the basic paperwork is already up to date.
• You have the flexibility to adapt the route: stop more, avoid extreme stretches, sleep where pets are accepted.

Think hard when:

• The dog is elderly with a chronic health problem or acute anxiety.
• The trip involves many days at high altitude (above 4,000 m). Dogs suffer more than humans from lack of oxygen.
• A large dog is going on a motorcycle trip or in a vehicle that is too small.
• The itinerary has a lot of time in big cities, museums, and restaurants, where dogs are not allowed.

People who decide to take the dog usually do not regret it. People who decide not to and leave it with someone they trust do not regret it either. Both choices have value.

The paperwork: the part that holds people up the most

To cross any South American border with a pet, the central document is the CVI, the International Veterinary Certificate, issued by MAPA (the Ministry of Agriculture). This document certifies that the animal is healthy, vaccinated, identified, and fit to travel. It adds to the vehicle and driver documentation, and does not replace any of it.

The process, in broad strokes:

1. Implanted microchip (a mandatory rule for almost every country). A simple procedure, done by a vet, with a compatible reader.
2. Up-to-date rabies vaccine (at least 30 days and at most 12 months before the CVI is issued, depending on the country).
3. Up-to-date multiple vaccines (V8 or V10 for dogs, V4 or V5 for cats).
4. Specific tests depending on the destination country (some ask for a leishmaniasis test or others).
5. Treatment against internal and external parasites (dewormer, flea treatment) within 7 to 15 days before the CVI is issued.
6. Vet appointment to issue the health certificate.
7. Request the CVI from MAPA, online or at a local office. The document's validity varies, usually 10 to 30 days.

By country, some critical points:

• Argentina and Uruguay: simpler process. MAPA CVI, vaccines, microchip, treatments. Senasa (AR) and MGAP (UY) check at the border.
• Chile: the strictest. It requires documented treatment against echinococcosis, and SAG agents are more detail-oriented. Out-of-date paperwork is a common reason for refusal.
• Bolivia and Paraguay: less formal in practice, but they require a CVI. Do not count on "they will understand." Bring everything in order.
• Peru, Ecuador, and Colombia: bigger restrictions. Research each case specifically.

Practical rule: start the vet process 30 to 45 days before departure. That is the average time to fit in vaccines, tests, microchip (if needed), and the final CVI issuance in the right validity window. It is the same window as human health preparation, so it is worth handling both together.

The vehicle: how to accommodate the dog

The logistics of space inside the vehicle change a lot depending on the dog's size and the type of trip. General principles:

• Dedicated space: the dog needs its own place in the vehicle where it feels safe. It can be a carrier (for small and medium dogs), an area in the back seat with protection, or a separate compartment in a motorhome or van. A loose dog on the front seat is a recipe for an accident, for both of you.
• Seat belt or restraint for dogs that ride loose on the seat. There are harnesses with a buckle compatible with the seat belt: low investment, high safety.
• Ventilation: dogs suffer much more from heat than humans. Working air conditioning is practically a requirement on a pet trip over hot roads. In a parked motorhome, cross ventilation is the rule.
• Accessible water: a bowl with water always available, even on the move (there are spill-proof bowls). Refill often.
• Food and kibble: carry enough to cover the main route. In some countries, the kibble your dog eats may not exist. On a long trip, buying a different local brand is normal, but make the transition gradual.

Use GT Overlander to plan stops in strategic cities. Describe the route in natural language, and the AI splits it into stages with mid-size and large cities. Useful for choosing stops in places with a vet, a kibble market, and pet-friendly lodging.

The daily routine

A routine with a pet changes the pace of the trip. Principles:

• Frequent stops: every 2 to 3 hours at most. The dog needs to pee, stretch its legs, drink water, and recover from motion sickness. A nice lookout, a gas station, a village. Anywhere works.
• Heat in a parked vehicle is deadly. Never leave a dog alone in a closed car on a sunny day, even "for 5 minutes." In hot countries (northern Argentina, the Chilean desert), the interior temperature rises brutally.
• Shade at the stop: before lunch, dinner, or stopping for anything, pick a place with shade so the dog can rest outside the vehicle if needed.
• Baths and care: on a long trip, an occasional bath becomes part of the routine. Pet shops in mid-size cities take care of it.
• Pet-friendly lodging: increasingly common, but not yet universal. The main lodging platforms have a pet-friendly filter. Campgrounds almost always accept pets. Big traditional chain hotels usually charge an extra fee. Small-town inns vary. Ask first.

Health and risk situations

The real points of attention:

• Altitude: above 3,500 m, a dog can have trouble breathing, loss of appetite, and lethargy. Climb gradually and watch closely.
• Extreme cold: Patagonia in June and August can hit -10°C or lower. Short-haired dogs need a blanket or coat. Paws are sensitive to ice.
• Extreme heat: worse than cold. Keep the dog hydrated, in the shade, with baths to cool it down.
• Local predators: in national parks and wild areas, a loose dog can attract jaguars, pumas, and vultures. Always use a leash.
• Snake, spider, or scorpion bites: in rural Brazil and northern Argentina, be alert. A basic pet medical kit helps with first aid.
• Escape: at a border, at a new stop, in an unfamiliar environment, a dog can bolt. A collar with an ID tag and phone number (preferably international) and a microchip are lifesavers.

Basic pet medical kit: saline solution, gauze, antiseptic, tick remover, extra dewormer, veterinary antihistamine (guided by the vet before the trip), and a thermometer.

Frequently asked questions

What if the dog gets sick in a foreign country?

Vets exist in any mid-size city in South America, and they are generally accessible. In big cities, there are 24-hour clinics. The plan: write down a reference vet in each region of the route before leaving.

Can I leave the dog at a pet hotel while visiting a museum or park that does not allow dogs?

Yes, in mid-size or large cities there are pet daycare hotels charged by the day. At a more remote destination, the pet either goes along or stays in the vehicle, with care about temperature.

Can a large dog handle a motorcycle trip?

No. A motorcycle trip with a pet is only viable for a small breed, in a specific carrier attached to the luggage rack. A large breed is not viable.

Is the investment in all this paperwork worth it?

For a single international trip, the cost of pet paperwork usually equals a few days of lodging. For people who will travel with a pet often, it becomes an annual routine and gets cheaper.

What if I cannot get the CVI in time?

You do not cross the border without it. The penalty can range from refused entry to quarantine of the animal for days, the worst possible scenario. Complete paperwork is a non-negotiable rule.

Wrapping up

A dog on an overland trip adds logistics, but it adds much more than that. Company during long hours on the road, a reason to stop where you would not otherwise, a social agent at a campground with other travelers, a presence that makes a long stop in an unfamiliar city feel like home. The initial preparation weighs, it is true. But for those who take it on, it is one of the trip decisions people regret the least. And the photos of the dog at lookouts you did not know still become part of the best memories of the whole trip.