I have two male cats that are five years old. I found a beautiful little female about 1 1/2 years old and decided to keep her. I had a seperate kitty liter box at first in a bedroom until she got use to the house and other cats. I have moved it down to the living room, then to the family room in hopes of getting down to the basement. She has been in our home for at least 6 weeks and never has had an accident. For some reason, yesterday she urinated on my dogs doggy bed. Then this morning she climbed in the bathtub and urinated in there. What seems to be her problem? I will say she and my two male cats are doing a lot of hissing and slapping at one another. I am trying to get them all to like one another, but it is going slow. Any suggestions?