Why Does My Dog Pant and Shake in the Car?

Panting and shaking in the car is motion sickness, fear, or heat, and you need to know which before you do anything. Motion sickness responds to very short rides and, in a lot of dogs, to medication your vet can prescribe. Fear responds to a graded plan that starts with a parked car. Heat responds to air conditioning and nothing else. Guessing wrong wastes months, and the most common wrong guess is treating motion sickness as a training problem.

Telling them apart

• Motion sickness usually comes with drooling. Heavy stringy drool, lip licking, repeated swallowing, and sometimes vomiting. It starts after the car is moving, often within five minutes, and it stops within a few minutes of stopping.
• Fear starts before the car moves. He balks at the driveway, resists getting in, or begins shaking the moment the door opens. That is anticipation, and it points at the car itself rather than the motion.
• Heat is about the environment. Panting with a wide mouth and a long tongue, worse in traffic and on sunny days, better with the air conditioning on. In a Florida summer this is more common than people think.
• Puppies are usually motion sickness. The inner ear structures involved are not fully developed, and a lot of dogs simply grow out of it somewhere between six and twelve months.

One useful test. Sit in the parked car with him, engine off, for five minutes. A dog who shakes there has a fear problem. A dog who is completely relaxed there and falls apart once you are moving has motion sickness.

If it is motion sickness

This is a medical problem with a training component, in that order.

Talk to your vet about medication. There are prescription options specifically for canine motion sickness and they work well for a lot of dogs. This is not a shortcut or a crutch, it is the actual treatment, and trying to desensitize a dog who is being made to feel sick every trip does not work.

Do not feed for two or three hours before a trip. An empty stomach helps considerably. A very small snack about thirty minutes before helps some dogs, so it is worth testing both.

Face him forward and keep him low. A crate strapped in the footwell or the cargo area, rather than a raised seat where he can see the world moving past sideways. Looking sideways out of a window makes it noticeably worse.

Crack the windows for airflow and keep the car cool. Both help.

If it is fear

Build it in stages. Two or three short sessions a day, about five minutes each, over roughly three weeks.

1. Days one to three, feed meals near the car. Ten feet away, engine off, doors shut. That is the entire session.
2. Days four to six, meals with the door open. He does not have to get in. Let him choose.
3. Days seven to nine, in the car, engine off. Feed him in there, five minutes, then out. Do not shut the door on the first few.
4. Days ten to twelve, engine running, parked. The engine noise and vibration is a separate step and it surprises a lot of dogs.
5. Days thirteen to sixteen, drive to the end of the street and back. Sixty seconds. Then home, and something good happens.
6. Then build by a couple of minutes at a time. Five minutes, then eight, then twelve.

Where you drive to matters as much as the driving. If every car trip ends at the vet, the car predicts the vet. Drive to a field, a friend's house, or a nice walk. Aim for four good destinations for every unpleasant one.

Setup that helps either way

• A crate beats a harness for most anxious dogs. Enclosed, dark, and it stops him bracing against every corner. Cover the top and sides.
• Non slip footing. A rubber mat or a bath mat. A lot of car anxiety is about sliding around on a smooth surface.
• Drive gently for the first month. Smooth acceleration, gradual braking, wide slow corners. It makes a real difference to a dog who is already struggling.
• Something to chew for rides over ten minutes. Only if he is not nauseous, and only if you can supervise or it is safe unattended in a crate.

What not to do

Do not flood him with a long drive to get him used to it. A three hour trip with a panicking dog does not habituate him, it confirms everything he thought about cars and sets you back weeks.

Do not comfort him continuously while driving. Reaching back, talking to him in a worried voice, and stroking him tells him something is worth worrying about. Calm and boring is what you want to project.

Do not skip the vet conversation because you would rather train it. If there is drooling and vomiting involved, this is physical, and no amount of graded exposure fixes nausea.

Do not assume he will grow out of it if he is over a year old. Puppies often do. Adults generally do not without intervention.

Car anxiety sits on top of a dog's general ability to settle, and that skill transfers everywhere. My free calmer dog blueprint covers the settle work and the decompression routine. Download the Calmer Dog blueprint

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Every drill in this article comes from the WorldWide K9 Academy course library. If you want the full step by step system, start with the $5 intro course.