Millions of people have fled the country of Syria because of a war that has been happening there for the past five years.
But while many people have left their homes and possessions behind, some people have stayed.
One man in the Syrian city of Aleppo has decided to stay to help look after other people's cats.
Mohammad Alaa Jaleel looks after more than 100 stray and abandoned cats.
Many were left behind by their owners when they left the city.
Credit: Pictures from BBC Panorama