I have come across this spider in our living room a few times. One was in a pile of newspapers, and another one started walking across the floor. They are black or blackish with a reddish stripe down the back. I believe the spiders I have seen have been about the size of a nickel, but I am not completely sure of the size as I try to stay far away from them! They may be a little smaller than that.

I'm mainly concerned if it is poisonous. One ran on my leg one time as I picked up a stack of newspaper it was hiding in. I also have two small dogs that like to chase and antagonize bugs, and that also has me a bit concerned.

If you cannot help me identify this spider, do you know someone who might be able to? Thanks.