They are all orphans who were rescued from the Zogg Fire in Shasta County.
A CAL FIRE firefighter found Captain Cal wandering alone with with severe burns on his paws.
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California Fish & Game brought him to the Oakland Zoo for treatment.
The sisters were found a couple of week later without their mother but otherwise in good condition.
The three cubs were put into the same pen for the first time this week.
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The zoo called it a "heartwarming hit."
The zoo says the cubs can't be released back into the wild.
But they will have each other until a permanent home can be found.
The three cubs met for the first time this week and the Oakland Zoo called it a "heartwarming hit."