I have had my cat Weezer for 4 years now.  When I got her she
displayed a lot of aggressive behavior: hissing, spitting, whacking,
growling and general actions that I expected with a change of
ownership.  I had assumed this was just an adjustment period, but this
has continued to this day, albeit to a slightly lesser degree.

The guy who gave her to me, a former co-worker of mine, had originally
told me he had gotten her from a friend.  Turns out she may have spent
the first 4-5 months of her life in a, shall we say, "less than
humane" shelter, which of course may very well explain the patterns of
her behavior.

Recently, my living situation changed and I am living now with 3 other
people and 2 other cats...both experiences my cat has not had before.
She has been extremely ornery in hissing, spitting and growling not
only at the other cats but at the other humans living there as well
including me.  She and the other cats have had constant altercations
in the middle of the night thereby waking everyone up and causing many
lost hours of sleep.  In observing, the other 2 cats have been pretty
low key about her presence until the last month or so, but my cat has
been very aggressive in her attitudes.  It has been over 3 months now
and there is no change in her behavior.  I have tried to be patient
and have also tried Bach Flower remedies to no avail.

With tensions rising in the apartment now it has become obvious to me
that my cat needs to be in a place where she can get some specialized
attention.

This is so hard for me.  I never thought I could give away a pet, but
these are not ordinary circumstances.  I know I am going to feel some
guilt about this, but I am absolutely physically exhausted from lack
of sleep and I fear this situation has escalated to the point where it
could alienate those around me.

Can anyone recommend a center that might treat her behavioral
disorders in a humane fashion?

Thanks for reading about my dilemma and I hope to hear from some of
you.