Wild foxes trained to 'sit' to receive food
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Lilian Alabaster has trained foxes to "sit" by feeding them sausages she throws from the window of her London flat.
Wild red foxes (Vulpes vulpes) are becoming increasingly common in urban areas.
Most urban foxes are nocturnal, largely going unnoticed by the public at night.
However, some more cunning foxes are learning to take advantage of the wealth of food available during the day, as well as exploiting human kindness.
Natural World: Unnatural History of London is on BBC Two at 20:00 BST, on Monday 18 June.