Weight, body shape, vocalisation, and energy level affect how easy a cat is to settle in an airline-approved carrier.
Breeds with higher health flags, flat faces, hairlessness, or extreme body types deserve earlier travel clearance.
Long coats, hairless coats, and heat-sensitive cats need more careful routing, timing, and cabin temperature planning.
Adaptability, stranger tolerance, and social needs help estimate how much desensitisation work to start before departure.