This tortoise is named Cactus, 40 years old, living at the San Francisco zoo. Ten years ago it was discovered that he had bladder stones; last year, he was doing poorly, and an xray showed that the stones finally had to be removed.
They removed one stone the size of a baseball, and three the size of golf balls. Those stones took up a pound of the guy's ten pounds of weight. And there's how they patched him up afterwards.
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