Anyone know anything about spiders??

Steph

Alright so Ik this has nothing to do with periods or anything but I was just trapped in my bathroom for a good hour by a spider... and then it went into uncharted territory. My room. So I was like fuck this and I HAD to kill it. I tried to get a good pic so if anyone knows anything about spiders please see if you can tell me what kind it is. My dog got really close to it and I wanna make sure it isn’t poisonous just in case it bit her.