Indigo Airlines allows passengers to travel with their small pets in the cabin as long as they meet certain requirements. Passengers must purchase an approved carrier and ensure that the pet is able to fit comfortably inside. The carrier must be leak-proof and have enough space for the pet to move around. All pet-related documents must be presented at the check-in counter. Additionally, the pet must be kept under the passenger's seat for the duration of the flight. Indigo Airlines does not allow passengers to bring exotic or dangerous animals on board.