https://www.zupyak.com/p/4807911/t/delta-airlines-pet-fees-complete-step-by-step-guide-2025
https://www.zupyak.com/p/4807924/t/american-airlines-pet-policy-and-fees-2025-complete-step-by-step-travel-guide
https://www.zupyak.com/p/4807939/t/united-airlines-pet-guidelines-2025-full-policy-update-for-safe-and-easy-pet-travel