My cat is acting weird?

Help, my cat has recently started acting different. It started the other night. One minute she was fine, and then all of the sudden she kind of "freaked out" and started running around crazy and now she is hiding under covers. She acts like she has fleas or something, but the vet said she does...

For the past month my cat has started acting strangely and its progressivly getting worse. Initially when I have witnessed it the cat gets a tick(movement)over its rear haunches ant then the tip is its tail starts twitching. All of a sudden the cat will spin roung and grab its tail biting and...

My 4 month old kitten started acting weird one day. We brought him to a new home, but he opened up right away. Sleeping with us in bed, purring all the time, and just loving all the attention. Now he's trying to hide everywhere, hissing when my boyfriend comes up to him, just laying in the little...

Hello =] Well, I have a 3 year old cat who has been acting verrry strange lately. For about a week she's been sleeping almost non-stop, she barely eats or uses the litter box. She won't even open her eyes when I go up to her while she's on my moms bed. We don't know what to do .. Any advice?

Hi-i gave my cat advantage flea treatment and now she is acting weird. She hisses at my other cat but likes to be by me. She has been hiding but comes out and meows very loudly when she hears me. Usually she bonds to the other cat not me. She doesn't look sick but maybe she is...Or do you think...