marley is a very complex little guy. he is 10 months. he is full of personality. but, lately he is becoming more grouchy and wants attention on his terms. if i am watching tv, he wants to be a lap cat, purring, wanting attention, just being a sweet kitty. now, if he is sitting by himself and i go to pet him, sometimes i get bit instantly!!! what the heck, maybe he is bipolar!! he doesn't ever bite hard, just enough to let me know he doesn't want to be bothered. is this normal?? he is my first cat so this is all new to me. i can tell when he doesn't want to be bothered, ears and tail are a dead give away...but i have little kids at my house quite a bit and he does the same with them, and i don't want the kids getting hurt. any advice as how to control it? i assume it will get worse with age?? why is he so craby sometimes??