Decree of the Ministry of Health 14/01/2008. Pets may be carried on buses provided they show satisfactory conditions of hygene on inspection. In the case of strong smell, parasites or other sources of discomfort to passengers, the animal will not be transported. In cases where it would not be possible to adequately clean the seat promptly at the end of the journey, the animal will travel on the floor. Regulations for dogs: owners and keepers are required to keep their dogs on a leash and muzzle. Access is only allowed on board after punching a ticket of the same price as the owner. There is no charge for guide dogs for the blind.