N/A for ordinary checked-pet planning
Xiamen Airlines
Xiamen Airlines can appear in route searches, but its English international conditions are not a normal green light for ordinary pet-dog travel. They state that small animals are not allowed as checked baggage and that transport as unchecked baggage is limited to special charter flights. Service-dog rules are separate from pet-dog travel.

Book early and confirm aircraft acceptance.
Under-seat dimensions can vary by aircraft.
Fees can change by region and currency.
Booking tip
If Xiamen Airlines appears as a direct operator, do not book it as a dog route unless Xiamen Airlines gives written confirmation for your exact case. Ask whether your dog is being handled as a special charter, cargo shipment, or service dog; ordinary pet owners should normally look for another carrier or a specialist shipper.
Why it can work
The value of including Xiamen Airlines is mostly protective: it prevents the planner from showing an observed direct passenger flight as if it were a pet-friendly option. If Xiamen is the only direct operator, treat the journey as a route-research problem rather than a normal airline pet booking.
Restrictions
Ordinary small animals are not accepted as checked baggage under the English conditions reviewed. Unchecked-baggage small-animal transport is limited to special charter flights. Live animals are otherwise restricted except for service dogs under the airline's service-animal rules. Pet acceptance is subject to Xiamen Airlines' prior consent and government documents where a special case exists.
Dog-owner notes
For ordinary pet dogs, use a different airline policy path or a professional pet shipper unless Xiamen Airlines confirms a specific live-animal cargo or special arrangement in writing. Do not confuse U.S. service-animal carriage language with ordinary pet transport.
Final check before paying
Confirm the exact aircraft, route, dog breed, carrier size, temperature rules and destination import law directly with the airline. A country can allow dogs while a specific airline or aircraft refuses them.