A family in Aberdeenshire is sharing its home with a colony of 2,000 bats.
The pipistrelles live in the loft of the Bestwick family home in Rothiemay, Scotland. Because they're a protected species, they can't be moved.
The Bestwicks said that although the smell could get bad, and they had to sweep up bat droppings, they'd learned to live with their furry guests.
Five-year-old Rebecca said she liked the way the bats squeaked and could fly through small holes.
The bats were in the house when the family moved in seven years ago.
Mr Bestwick says he has no problem with bats being protected, but wished the law was a bit more in favour of people in their position.
Mrs Bestwick said: "One day we discovered there were 23 bats in our water tank, which was why the water wasn't tasting very nice."