It's been a sad couple of days.  Mike took Zuzu in for her check up and turns out she had a large tumor on her kidney.  She just was so sick and most likely in pain so we made the decision to have her put to sleep.  Mike was with her the whole time and I'm SO glad she didn't go alone, but how I wish I had been there to pet her and hold her just one more time.  I loved that cat SO much and I just can't believe we're starting this new life without her.