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The kittens live near Audubon Canyon Ranch and have survived to 4-months-old.
Their mother was collared with a GPS transmitter in October after she was found in the Glen Ellen-Kenwood area of Sonoma County.
VIDEO: Mountain lion caught on camera dragging deer off Hillsborough porch
Mountain Lion caught on camera on Hillsborough porch
Researchers say the average survival rate for young mountain lions is about 50-percent.
Alum Rock Park trails closed after Mountain Lion sighting
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