Many dogs suffer from carsickness, especially when they're young. Some outgrow it. If you know your dog is prone to carsickness, be sure to take it slow, and be extra careful around sharp curves or up and down hills. Fast stops and starts are rough on upset stomachs. Dog experts recommend that you open the window a bit if you are traveling in an air-conditioned car.
Fresh air does wonders for animals who have a tendency to get car sick.
For some canines, the fear and anxiety attached to automobile travel are the cause of nausea. You can help calm your pet by getting him used to riding in a car. Begin by simply sitting in the car, without turning the engine on. Be sure to praise him. Do this on several occasions, and when he seems comfortable, turn on the engine.