Hyenas roam the streets of the ancient walled city of Harar in eastern Ethiopia every night, seeking scraps of meat to drag to the nearby caves.
But residents are not afraid. A family chosen by the town to feed the animals is not daunted by the task despite the dangers that are associated with coming into close quarters with such wild animals.
Abbas Yusuf, known as Hyena Man, learnt to feed the hyenas from his father, Yusuf Mume Salleh, who fed them for 45 years before passing the job to his son 13 years ago.
It has been a centre of Islamic culture since it was founded in the 7th century. In the 16th century Emir Nur Ibn Mujahid built a four-metre-high protective wall around the city, pierced by five gates.
Every year since the 16th century, to mark the birth of Prophet Mohammed, the city's residents offer the hyenas porridge mixed with butter and goat meat on the "Hakim Mountain", outside the city, believed to be a holy site because the ancient Muslim leaders of the city are buried there.
If the hyenas refuse the sacrifice, people believe the country will have bad luck.