While vomiting is a well-known symptom, the practice says dogs often show more subtle signs that can go unnoticed. Rebecca McConochie, head vet at Attimore Veterinary Group, said: "These signs are often mistaken for excitement or nervous energy. Pet owners urged to spot car sickness symptoms (Image: Getty Images)"But in many cases, they’re actually early warning signs that a dog is experiencing motion sickness." Travel sickness is most common in younger dogs but can affect any age, and can be linked to motion or anxiety. Advice shared to help dogs travel comfortably (Image: Getty Images)Ms McConochie said: "If left unmanaged, travel sickness can worsen over time, with some dogs becoming increasingly reluctant to travel altogether."