We have a colony of stray cats that we take care of (that are going to be trapped, fixed, and released back this month) one of the strays has become very fond of us and has been coming inside and staying for hours at a time. My son has started calling her Captain Barnacles so we've decided to keep her. I'm guessing she's about a year old based on her size, since we have another thats almost the same size that'll be one next month. In the past few weeks she has been getting bigger but I'd like to have an idea about how far along she is so I know when exactly I need to start keeping her inside full time.