Horses, donkeys and mules will receive registration numbers and legal liability for accidents on the Greek island of Leros, following a decision by the island’s City Council. The new regulation will include all “passenger animals” and it provides that the owners will have to issue licenses proving their ability to ride and treat the animal, as well as to follow traffic regulations. The transport of passengers and goods via animals is well established in Leros given the territory’s morphology. Even nowadays, the practice shows remarkable growth, especially due to visitors‘ desire to experience the traditional way of travelling around the island. According to the new regulation’s key points, horses, donkeys and mules are considered to be passenger animals and they can be rented for the transportation of passengers. The animals require a riding license, granted by the municipality of Leros. The license will be issued in the owner’s name and will indicate the animal’s registration number, the year and month of its birth, the owner’s details, including taxpayer identification number. Furthermore, in order to receive the license, the owner must be over 18 years old and be legally qualified to practice the profession, while the animal needs to be over 3 years old. A Municipality of Leros public servant will be in charge of providing the necessary licenses and authorizations. Furthermore, the animal’s hoofs need to be marked with the registration number, while the animal’s owner is required to ensure the immediate cleaning of the island’s streets and public spaces, to avoid unwanted odors and maintain hygiene. Finally, the passenger animals will follow predetermined routes both during tourist tours and during their transport to and from the stables. These routes are determined by a special decision of the Leros City Council.