My wife and kids came home one night and found a puppy sitting in the road in front of our house crying (it was 5F with a windchill of -15F). Our neighbor said he saw her in the woods a week prior, so she had been out for a while. They took her in and we ran a found puppy ad. Nobody claimed her, so we took her to the vet yesterday and she is now officially ours.
She is about 4 months old and our vet said a Border Collie mix. She is potty trained, calm and very snuggly. Guess we got pretty lucky.
Here is a pic with my oldest daughter: