Do infants require a passport? Wish someone told me this before booking

Textarea: Booked flights before even thinking about this, then had a small panic moment. To answer clearly: do infants require a passport — yes, 100%, for any international travel, no exceptions for age. What really caught me off guard is how long processing can take for a brand new baby's first passport, especially if you're applying during a busy season. My advice: apply the moment you have the birth certificate in hand, don't wait until closer to your trip, because expedited fees add up fast if you're in a time crunch.