Cat took a 5-hour car ride yesterday, ate and drank normally at the new home, then suddenly vomited yellow fluid at noon today

A cat that vomits yellow fluid after a long car ride may have: 1. Carsickness from the long trip, usually temporary as it adapts; fast from food and water for half a day and give a quiet rest space. 2. Stress or anxiety in the new environment, which can cause vomiting; watch closely and see a vet if it continues.

3. Diet issues: a changed diet or unsuitable food can cause vomiting; offer proper food and transition gradually. 4. Gastroenteritis or panleukopenia: if bought from a cattery without full vaccines, it may be a ‘week-old sick cat’; panleukopenia signs are vomiting, diarrhea, fever, lethargy, and poor appetite. If vomiting continues or worsens with other signs, see a vet.