Global Perspective is the BBC World Service's international documentary series.
Each year the BBC World Service collaborates with radio stations from around the world to make a documentary series on a contemporary subject of international importance and interest.
Each partner station contributes a documentary which gives a local interpretation of the chosen theme, and this year the theme is Escape.
Programme Seven: Where the Buffalo Roam
Hong Kong is well known as a community made from migrants: refugees and expatriates and people in general who are looking to escape their lives back home and build new ones.
For many the city with the iconic island skyline is a land of opportunity - but this densely populated place appeals not only to foreign humans but to certain non-native animals as well.
Whether they've been introduced, secretly released, escaped or abandoned they have found their own niche and been accepted as part of Hong Kong's landscape.
Sarah Passmore from RTHK looks at how creatures from birds to bovines, and reptiles to rhesus monkeys have become unlikely, but permanent, residents.
Global Perspective