| Motion sickness is characterized by nausea, excessive salivation, and vomiting, and affected animals may have other signs referable to stimulation of the autonomic nervous system. Animals may yawn, whine, and show signs of uneasiness or apprehension; severely affected ones may also have diarrhea. Motion sickness is usually seen during travel by land, sea, or air, and signs usually disappear when vehicular motion ceases. |