Earthquake Shakes the San Francisco Zoo

USGS reports a small quake just off the shore of San Francisco early Tuesday.

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    The penguins at the San Francisco Zoo had reason to waddle Tuesday morning when the ground beneath them began to shake.

    The animals at the San Francisco Zoo got a rude awakening Tuesday morning.

    The United States Geological Survey reported a 2.2-magnitude earthquake shook just a few miles offshore from San Francisco Tuesday at 12:46 a.m.

    The quake was recorded about 4 miles west-northwest of the San Francisco Zoo in the Pacific Ocean, according to the USGS.

    The temblor had a depth of about 5.5 miles, according to the USGS.

    Bay City News contributed to this report.