All PETS (non service animals) shall be transported in a pet carrier or other vessel that is suited to properly contain the animal, with the following exception:
DOGS (non service animals) are allowed onto the service in either an appropriate carrier or with a muzzle and the animal must be on a leash. Dog muzzles or masks must be properly fitted to fit over the snout to prevent the animal from biting other animals or humans.
Pets must remain under the control of the owner at all times and shall not be left unattended. Pets shall not block the aisleway or passenger doors.
 A covering put over an animal’s nose and mouth in order to prevent it from biting: