Global warming is bringing a new threat to our back gardens - poisonous spiders.
The False Widow spider first arrived in banana shipments from the Canary Islands in around 1870 and is now growing in numbers thanks to increased temperatures.
The good news is the spider's bite will not kill, although it can cause swelling and severe pain.
Michael and Pam Willis recently found one in the garden of their home in Verwood, Dorset.
Mrs Willis, 62, said: "It was black and shiny, not like a normal, hairy spider. It's terrifying if numbers are rising. I'm worried about our grandchildren."
Stuart Hine, of London's Natural History Museum, said: "There has been a dramatic increase over the last seven to ten years; no doubt due to global warming. They survive winters to mate."
He added: "There are probably tens of thousands. In a few years they will be in every garden in the south of England and more will be spotted higher up the country."
"black and shiny"