I found this on moversnet, a site with some really helpful information. This is all about how to prepare for a move with your animals' health and safety in mind:
Keep your pets' routines as regular as possible as you prepare to move. If you normally feed, exercise or play with them at a certain time, continue to do so. During the final crunch of moving, you may find it works best to keep your pet either at a friend's house or a kennel, reducing the chance of your pet getting upset and running away, or in the case of cats, hiding in a box about to be shipped.
Keep some form of identification on the pet at all times and be sure you have current pictures along with a written description available. This will reduce a lot of stress should your pet escape. If the length of the move requires the animal be provided with food and water, be sure the food is bland and easily digested and that the water comes from your home supply. Changing diet or water sources are common causes of diarrhea and vomiting from upset stomachs. If in doubt, check with your veterinarian for food recommendations.
Prior to moving, schedule a visit with your veterinarian for a thorough physical exam, making sure all vaccinations are current, especially the rabies vaccination. While at your veterinarian's office, get copies of your pets' records and check to see if he can recommend another veterinarian at your new location. You can also call the American Animal Hospital Association (AAHA) at (800) 883-6301 for the names of AAHA veterinarians near your new home.
If your pet is on any medication be sure to have an ample supply so you won't run out before getting settled in your new location. Also discuss with your veterinarian whether your pet should be tranquilized during the move. If so, get enough to try it out prior to the move to be sure the dosage works properly.
Since each state has different laws and regulations regarding the importation of animals and some counties and municipalities have their own ordinances, check with a veterinarian in the new area to be sure your pet complies. It is important to do this several weeks before your move to allow time for all paper work to be completed.
Temperature extremes should be avoided. In most cases, it's best to transport your animal in a sturdy, insulated carrier to help regulate the changing temperature. Never leave a pet in a hot car during the summer time or a cold car in the winter.
If you are transporting the pet by plane, try to book a direct flight to minimize the time the animal may be sitting outside the plane in inclement weather conditions. Some airlines provide counter-to-counter service so your pet will be carried on and off the plane by an airline employee. While this service costs a little more, it may be worth it for your peace of mind.
For more information about dealing with specific pets (they cover dogs, cats, birds, fish, pet rocks, etc) click here.
