Robyn Johnson, in front at right, lifts Hobbes' leg so that veterinarian Dr. Allison Wack, left, can collect urine via ultrasound guided cystocentesis. (This is using the ultrasound machine to identify the urinary bladder in order to collect urine through the abdominal wall, using a needle and syringe.) Jennifer Sohl, second from left, and Carly Barron are stationed near the leopard's head.
Baltimore Sun photo by Amy Davis
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