Sutter Medical Group urologist Dr. Kenneth Ferguson, left, and Sutter interventional radiologist Craig Glaiberman use cystoscopy Tuesday to insert a stent in the urinary tract of Castro, a 15-year-old Sumatran tiger. Fred Gladdis/Enterprise photo
Castro’s eyes are open, but the tiger is sedated during the procedure Tuesday. Fred Gladdis/Enterprise photo
A sedated Castro is prepped Tuesday to undergo minimally invasive surgery performed by a team of veterinary surgeons from the UC Davis School of Veterinary Medicine and the Sacramento Zoo. From left are Dr. Ray Wack, Rebecca Pacheco, Megan Duncan, Dr. Katie Delk, Anne Burgdorf and Miranda Sadar. Fred Gladdis/Enterprise photo
Castro, a 15-year-old Sumatran tiger, rests Monday at the Sacramento Zoo, unaware of what was to come Tuesday on the surgical table at the zoo’s hospital. Fred Gladdis/Enterprise photo

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