My cat

This is my cat Dora. She looks all fat and cute but in reality she is not. She is a mean cat. I can go to pet her and I'll scratch her chin how she likes but as soon as I pull my hand away she smacks me and try's to bite me. Sometimes she will be sleeping in my room and I will walk in and she will just give me the look of death like she wants to kill me. When I try to get her to get up and leave or something she just hisses at me.