🔄 Updated : July 4, 2026

Soft carrier, hard crate, folding kennel: standing in the travel aisle of the pet store, it’s easy to hesitate. Yet the choice comes down to two simple criteria: your dog’s size and how you travel. A toy poodle in an airplane cabin and a Labrador in the back of a station wagon don’t have the same needs. This guide helps you sort by your situation, meet the transport standards, and get your dog used to their new space.

Soft carrier or hard crate: what’s the difference?

The soft carrier suits small dogs and short trips; the hard crate offers far superior structural protection. The carrier, light and foldable, goes over your shoulder or stores away easily; it’s perfect for a Chihuahua at the vet or in the cabin. The hard crate, on the other hand, provides real protection in a collision and stands up to handling in the hold.

The main differences:

  • Weight and bulk: the carrier wins; the crate is heavier but sturdier.
  • Protection: the hard crate protects in an accident or a fall; the carrier doesn’t.
  • Ventilation: both must offer airflow on several sides.
  • Cleaning: the hard crate washes more easily after an accident.

For the car in particular, the hard crate is — along with the dog car harness — one of the only two genuinely reliable restraint systems.

How do you choose the right size crate or carrier?

The rule is universal: your dog must be able to stand without lowering their head, turn around fully, and lie down with legs extended. Too small, and the container is uncomfortable and may be refused by airlines; too big, and it offers less support and becomes unwieldy.

To determine the dimensions:

  1. Measure your dog’s length from the tip of the nose to the base of the tail, then add a few centimeters (an inch or two).
  2. Measure the height from the floor to the top of the head (or erect ears) while standing.
  3. Choose a model whose internal dimensions slightly exceed these measurements.
  4. Check the maximum weight the container supports.
  5. For a puppy, anticipate growth or plan to size up later.

What standards apply for the plane and the train?

For the plane, the crate must meet IATA requirements, which govern sturdiness, ventilation, and closures. These rules mainly concern travel in the hold, but airlines also set their own size and weight limits for the cabin. Always check with the airline before buying, because tolerances vary.

A few points generally expected:

  • a solid hard crate, with ventilation on at least three sides for the hold;
  • secure closures that can’t open accidentally;
  • an absorbent, leakproof floor;
  • dimensions and weight within the cabin limits for small dogs.

If a flight is on the agenda, read our complete guide to flying with a dog before booking. For the train, the rules depend on the operator: small dogs in a carrier, large dogs on a leash, per the carrier’s conditions of travel.

Folding crate or fixed crate: which should you pick?

The folding crate is practical day to day; the fixed crate is more protective. Folding fabric or soft-sided models store flat and set up in seconds — ideal for occasional use at home or during a stay. Fixed hard crates, bulkier, offer real protection in transit and last for years.

  • Folding / soft-sided: saves space, quick setup, home or occasional use.
  • Fixed hard crate: maximum protection, essential for the hold and recommended in the car.

A good compromise for many households: a hard crate for trips and a soft bed at home.

How do you get your dog used to their crate or carrier?

Habituation must be gradual and always paired with something positive. A crate should never be experienced as punishment: it’s a refuge. Allow several days, or even weeks, for a wary dog.

  1. Place the open crate in a living area, without forcing contact.
  2. Put a familiar blanket and a few treats inside.
  3. Reward each approach, then each voluntary entry.
  4. Close the door for a few seconds, then gradually extend the duration.
  5. Take short trips before attempting a long journey.

Never abruptly shut a dog inside a container they’re still discovering: you risk creating a lasting aversion.

Which accessories improve comfort inside?

Suitable bedding, accessible water, and a familiar object make the container more welcoming. Comfort reduces stress and eases acceptance, especially on long trips.

  • an absorbent, washable mat or cushion in the right size;
  • a bowl or clip-on water dispenser for long journeys;
  • a blanket or toy carrying the smell of home;
  • an ID label with your contact info on the container.

Sources

Frequently asked questions

What size crate should I choose for my dog?
Choose a crate in which your dog can stand without lowering their head, turn around completely, and lie down with legs extended. Measure their length from nose to base of tail and their standing height, then add a margin. Neither too small nor excessively large.
Is a soft carrier accepted in the airplane cabin?
Often yes for small dogs, but each airline sets its own size and weight limits. The carrier must be ventilated, securely closed, and fit under the seat in front of you. Always check the exact conditions with the airline before booking.
Do I need an IATA-compliant hard crate for the hold?
Yes, travel in the hold requires a hard crate meeting IATA requirements: sturdiness, ventilation on several sides, secure closures, and a leakproof floor. Airlines can add their own criteria, so confirm the expected model before departure.
How do I keep my dog from stressing in their crate?
Use gradual habituation, associating the crate with positive experiences: treats, a familiar blanket, short sessions that get progressively longer. Never shut them in abruptly and never use the crate as punishment, or you risk creating a lasting aversion.