Each country and each airline has strict regulations regarding international pet travel. Our FREE airline approved crates comply with the International Air Transport Association’s (IATA) regulations. It is important that a crate must be well ventilated and large enough that your New Doggy can stand up, lie down and turn around freely. No part of the dog is allowed to protrude from the crate. It should also be secure and leak-proof. Sedation is neither allowed nor suggested due to the unpredictability of how the drugs will affect the dog at high altitudes.