At times i wonder if my cat is bipolar, if that is even possible? there are times where he will come to sleep on my bed, jumps up, sees me, lays down, begins grooming hims self, and falls asleep. out of no where he wakes up and stares at me with a dead stare. one time he even attacked me, jumped on me and bit my shoulder then got off began to purr and fall back asleep? he will hiss if someone (my mom, stepfather,or step-grandmother) tries to move him while he is asleep, MOST of the time (every once in a while he gets mad) he doesnt mind if it is me i could carry him around while he sleeps and he doesnt care. sometimes he like to be picked up and other times he hates it? every once in a while he will come out of no where (inside the house and outside) and jump on the back of my legs, and then just follow me or run away? he also hates when i leave. i will go out to warm up my car and he is no where to be seen, but as soon as i get in my car to leave he hops on the hood and will NOT get off unless i get out of my car and put him inside. i love my cat but does anyone know what he has these odd behaviors?