How do you feel about your soon to be ex brother-in-law? This could be a clue to the dreams interpretation.
There were 6 cats. Does the number 6 have any special meaning or association to you?
3 kittens were black with no names. This could represent something you feel is lurking, something menacing (or even evil?) that you can't quite explain. Do you feel soemthing bad is going to happen in the near future? Or did something happen 3 years ago that still haunts you?
2 grown cats black and white. This is a contrast--between good and evil, between light and darkness, or some other associations unique to you. What do you think a black cat could represent and what do you think a white cat would represent?
Do any feelings you had for Boris and Moses remind you of the same feelings you are experiencing today?
I also found this at the site's dictionary:
Cats have both positive and negative connotations. You need to consider all of the details in the dream in order to obtain accurate interpretation. The cat can be a symbol of sexuality, femininity, prosperity and power. A cat is also an independent animal, and in your dream you may be associating yourself or someone else with these characteristics. Usually the dream is telling you about yourself and not others. Historically black cats have been symbols of evil and bad luck. If you are a cat lover and have one as a pet, the symbolism may not apply to your dream. Old, superstition-based dream interpretations say that a cat is a bad omen and that you can expect deceit from those that you trust.
http://www.meaningofdreams.org/Dream...reams/Cat.html