Farriers (horseshoe-makers, equine hoof carers) were indispensable in old times since all households had at least one hoofed pack animal (a donkey or a mule) to help out in the economic life of farmers and traders. All single-hoofed on the island had to be fitted with horseshoes at regular intervals since intensive labor and the rough mountainous terrain wore the equipment down rapidly. Horseshoes were hand-made of iron wrought on anvils, while craftsmen undertook to fit the horseshoes on the animal, a job requiring experience and skill. Horseshoe-makers usually were ironsmiths and/or self-styled veterinarians also spaying all kinds of animals.