The diminutive dog pack was found early Friday outside the office of the Pasadena Humane Society with no indication of where they had come from.
The only clues are a monogrammed blanket found in one of the wire crates and surveillance video that shows a white pickup truck stopping at the building shortly before dawn.
KTLA-TV in Los Angeles says the city has a misdemeanor law on the books regarding abandoning dogs that carries a fine.
The dogs will be put up for adoption.
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