In the cabin with you
On a private jet, pets usually fly in the cabin next to their owner. A crate or carrier may be required.
Documents
On international flights, the pet entry rules of the destination country apply: requirements such as a microchip, rabies vaccination and a health certificate vary by country. Preparing the documents before the flight is your responsibility.
Tell them in advance
Note the type, number and approximate size of the animal. Some companies or aircraft do not accept pets; telling them in advance avoids problems on flight day.