Question

I have 4 cats. one of 5years who's sterilised,and 2 of 1year,who are not sterilised,and 1 of 1year who's not muted.The older cat(Flea) sometimes is very loving towards them,other times she'll scretch their eyes out!!! This makes the little ones very unconfortable,because they don't know on which leg to stand on most of the time.And with humans Flea acts just the same!Then very loving,and before you know it she's ripped part of you skin of.I got the feromones from the chemist to make her feel more confortable,but in vain! Could this behaviour be psycological? I got Flea from an old man who could not control her,she was then only about 4 moths old.I wonder if one can do something about her attitude?Thanks for your understanding,                            &nbs p;                                                                     Angie