Hello

I have found this thing on my desk, does anyone have any idea what it might be? I’m super worried it might be dangerous? Could it be a tick? My brother has been bit last summer and got sick from one, so that’s fresh on my mind
The thing is a bit bigger than a millimetre and it has six legs, the bum is brown the rest seems black. Sorry re the pics, it was a bit too small for my phone cam
Thanks in advance!

Here’s the pics I have:
http://imgur.com/NL1BjGJ
http://imgur.com/7WkE3mO
http://imgur.com/dcz1oSq
http://imgur.com/BUUFnwg
http://imgur.com/xgtT00W
http://imgur.com/g1fDtZl