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How to travel with a small pet
Take your small pet to your veterinarian.
Your small pet will be better able to handle the stresses of travel if he is in good health and physical condition. If you are traveling between states with him, you will probably need a certificate of health from your veterinarian as proof that your small pet is disease-free.
Even if you are staying within the state, making sure that he is healthy is still a good idea. Ask your veterinarian for a copy of your small pet's medical records.