Aslamualikm,
I saw myself chasing a dark grey rat that entered my house, I chased all the way to the bathroom and kept running after it, then it stood up, faced me and sprayed what suppose to be poison on my left knee. That poison caused two big red spots that wouldn't go away with water. If you can help me with explanation.

Jazakom Allah kheir

I would probably check the doctor with that...