Last night I was on a walk when I had an encounter with a lovely little (6-8 months old?) cat. It was a few blocks away from my house and she was in the bushes. She darted away when my boyfriend and I walked past, but then she timidly approached us, gave a quick head butt, and then darted away again. This repeated several times--- she'd run away, then turn around and very slowly come back for a scratch, then she'd dart away again. There were a few things that I found to be odd about the encounter. For one, she wasn't wearing a collar. Also, she was super-skinny. We're talking really thin. She did seem to be otherwise perfectly clean and healthy. Lastly, she tracked us for several blocks. She followed us very closely for a while and then dropped back-- we tried to ignore her, but then every so often we'd look back and see her hiding under a car or trotting along the sidewalk. But, by the time we reached our house, she'd disappeared. I'm only familiar with indoor cat behavior, but I was under the impression that outdoor cats don't tend to stray very far from homebase, and this one took quite a journey. Does this behavior seem at all odd for an outdoor housecat? Thanks!