I had a girl friend over, (normally I do not have anyone over), cat was fine, I went to the washroom, my friend was in the kitchen. All of a sudden, the cat attacked her, I came out, and the cat attacked me. We sat on the couch, cat was fine again, ate some treats, when our feet touched the floor, cat freaked out again. Fangs out, growling, hissing, everything!! I mean cat was screaming! Normally, gentle loving cat. Had here from baby. Never been outside, got all shots, been spayed. We ran out of apartment, afraid to go back in. I am scared and don't know what to do. There is no way she got ahold of any toxic substance, and I've never seen a spider in the house. M y friend snuck in through window to get my keys, cat was on table hissing, fangs out still. Please hellp!