The household of 11 adults plus children subsisted on two goats a week, honey from a hive in the garden and Quaker Oats from a local shop.

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The two of them came scrambling down the rock like goats.

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"The benefits of the goats is this property is home to two endangered species, the San Francisco Garter Snake and the California Red Legged Frog, " SFO Airport Duty Manager Doug Yakel told CNN.

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