It's every arachnophobe's worst nightmare - spiders with giant green fangs who wait until its dark to pounce on unsuspecting passers-by.
But that's the terrifying scenario in one Devon home which has become home to a colony of rare segestria florentinas.
Jessica Buston, 13, discovered eight of the creepy crawlies - which measure up to an inch in body-length - living in holes at her house in Exeter, Devon.
Creepy: Jessica Buston, 13, was terrified when she came across these green fanged critters living in her house. Luckily, although they do bite if disturbed, they are not dangerous to humans
'They are black all over and have two green fangs, which made them look really scary,' she said.
'We found them living in holes at the back of our house.
'I was a bit scared to start with but I've got used to them now and I'm happy for them to stay where they are.'
The spiders - part of the funnel web family - are said to be the second largest species in the UK and can deliver a nasty but non-venomous bite.