Why Is My Dog Drooling So Much In The Car? 27-11-2021, 14:22 27-11-2021, 14:22 QA Dogger 38 0 0 + - 0 Why dogs get drooling in the car. One of the most surprising causes of dog drooling is motion sickness or car sickness. ... If your dog associates car rides with negative experiences (such as goin... Read more..