CO2, carbon dioxide is as common as... well, air. Plants take it in and give back oxygen. We humans and all animal species take in oxygen and 90% of what we exhale is CO2. What a good lesson in common sense Mr. David... I am not an expert so we should check with the airlines. 2 things here...if you're concerned about flying both food and dog at the same time...Fed Ex the food to get there the day before in the cooler. number 2 is airlines fly dry ice all of the time in the chilled semen kits. I'm sure if they thought something was awry they wouldn't do it... Paul ============================================================================ POST is Copyrighted 2006. All material remains the property of the original author and of GSD Communication, Inc. NO REPRODUCTIONS or FORWARDS of any kind are permitted without prior permission of the original author AND of the Showgsd-l Management. ALL RIGHTS RESERVED. ALL PERSONS ARE ON NOTICE THAT THE FORWARDING, REPRODUCTION OR USE IN ANY MANNER OF ANY MATERIAL WHICH APPEARS ON SHOWGSD-L WITHOUT THE EXPRESS PERMISSION OF ALL PARTIES TO THE POST AND THE LIST MANAGEMENT IS EXPRESSLY FORBIDDEN, AND IS A VIOLATION OF LAW. VIOLATORS OF THIS PROHIBITION WILL BE PROSECUTED. For assistance, please contact the List Management at admin@xxxxxxxxxxxx VISIT OUR WEBSITE - URL temporarily deleted due to AOL issues ============================================================================