jumping spider

[smof]

There's a tiny jumping spider that's been living behind my bed for the last two days. I've caught it a couple of times because it's really cool to watch, and got some pics. I've no idea what species it is tho.

http://tangeroo.nome.ca/pictures/animals/jumper1.jpg/jumper1.jpg

http://tangeroo.nome.ca/pictures/animals/jumper3.jpg/jumper3.jpg

To get a sense of size. The 'L' it's standing near is 3mm high (0.8")
http://tangeroo.nome.ca/pictures/animals/jumper4.jpg/jumper4.jpg

Throwing a tiny threat display
http://tangeroo.nome.ca/pictures/animals/jumper-threat.jpg/jumper-threat.jpg

[KingBollock]

We've onyl got two types of Jumping Spider in the UK. The one you have there is the Fence Post Jumper (Marpissa muscosa). I've only ever seen one before and it was on a fence post (unsurprisingly) in our garden.

[smof]

Cool. Do you know if they get any bigger than 3mm? I'd love to keep one for a while but I don't know what I'd feed it.

[KingBollock]

Cool. Do you know if they get any bigger than 3mm? I'd love to keep one for a while but I don't know what I'd feed it.
I doubt it would get much bigger. The more common Zebra Spider (Salticus scenicus) gets to about 5 or 6mm I think, and yours is a smaller species. From what I can gather they like other spiders to eat so you could try Money Spiders.