Can Car Rides Make Dogs Drool More?

Why Car Rides Trigger Drooling in Dogs

Car rides can increase drooling in dogs due to a mix of physical and emotional triggers. According to the *Dog Owners Home Veterinary Handbook*, excessive drooling—called hypersalivation—can be caused by motion sickness, which is common in dogs during car travel. This type of drooling is a physiological response to the disorientation and nausea that can occur when a dog is in a moving vehicle.

Drooling can also be linked to emotional states. The *Mood Matters* book notes that a dog’s emotional state can escalate during car trips, especially when the dog is excited or anxious. For example, a dog may become increasingly excited as the car starts moving, leading to heightened salivation.

Drooling as a Sign of Stress or Anxiety

Drooling is not just about motion—it can also signal emotional stress. The *Canine Body Language* guide describes hypersalivation as a sign of extreme stress, even when the dog doesn’t appear visibly anxious. One example shows a dog with separation anxiety drooling so heavily that it appears soaked, despite no outward signs of distress.

This means that even if your dog seems calm during a car ride, sudden drooling could indicate hidden anxiety. The brain controls saliva production, and stress or anticipation—like being taken to a new place—can trigger increased salivation.

Normal vs. Excessive Drooling: What’s Typical?

Normal drooling is common, especially in breeds with loose lips like St. Bernards, mastiffs, bloodhounds, and Newfoundlands. These dogs naturally produce more saliva due to their anatomy. However, even non-drooling breeds can drool more during car rides due to excitement or motion sickness.

The *Unleashing Your Dog* guide explains that drooling is a reflex, not a behavior, and is part of normal digestion. Saliva helps with chewing, swallowing, and cleaning the mouth. But when drooling becomes excessive—dripping from the jowls or soaking the dog’s coat—it may be a sign of a problem.

When to Worry About Drooling After Car Rides

If your dog drools heavily after a car ride, consider possible causes beyond excitement. The *Dog Owners Home Veterinary Handbook* lists several serious causes of hypersalivation, including: - Motion sickness - Oral pain (e.g., from dental disease) - Foreign objects in the throat - Heat stroke - Poisoning or medication side effects

If drooling is sudden, accompanied by gagging, pawing at the mouth, or vomiting, it could indicate a foreign body in the throat. In such cases, immediate veterinary care is needed.

How to Manage Drooling During Car Rides

There’s no need to stop your dog from drooling—it’s a natural reflex. Instead, prepare for it. Carry a towel or bib to wipe excess drool. Avoid drastic measures like “mouth diapers” or surgery to alter lip shape.

To reduce drooling linked to anxiety or motion sickness: - Gradually acclimate your dog to car rides - Use calming techniques or vet-recommended remedies - Avoid feeding right before travel

If drooling persists or is unusual for your dog, consult a veterinarian to rule out medical causes.