What are the regulations and guidelines for transporting a dog in an air travel crate?

When transporting a dog in an air travel crate, it is important to follow regulations set by the airline and guidelines from organizations like the International Air Transport Association (IATA). These regulations typically include ensuring the crate is the right size for the dog, providing proper ventilation, securing the crate properly, and including necessary identification and documentation for the dog. It is also recommended to provide familiar items like a blanket or toy to keep the dog comfortable during the journey.