Stray Dog

I've noticed a little stray around for the past week. It looks like a larger version of a Yorkshire terrier, and seems fearful of people. It's probably too smart for the dog catcher. I fed it today and now it's rolling around on my newly cut front lawn. I'd like to get close enough to check for tags and a collar. No lost ad on Craigslist.
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I fed the dog again this morning, and it's sleeping outside under my truck. I'm wondering if it's a feral dog, or at least a dog that been on it's own for a long while.
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Happy Ending? The kids next door glommed onto the dog, gave her a bath, and named her Daisy. It seems that Daisy loves kids, but is deathly afraid of adult men. They will probably keep her.