Ladybird spider
Media playback is unsupported on your device

Ladybird spider brought back from the brink

11 August 2011 Last updated at 11:26 BST

One of Britain's rarest spiders is being re-introduced at a nature reserve in Dorset.

Ladybird spiders were once feared to be extinct in the UK but recently numbers have been rising.

The creatures are black for most of their life but the males moult to red and black before they mate.