April 23, 2012
In this Thursday, Feb. 23, 2012 photo, a worker gives a cardiac ultrasound to 9-year-old orangutan named Satu, at Zoo Atlanta, in Atlanta. A groundbreaking national project housed at Zoo Atlanta is researching heart disease in orangutans through the world’s first awake ultrasounds on the rust-colored apes. (AP Photo/Dorie Turner)
Stories this photo appears in:
Orangutans aren't known for their patience, but this one, named Satu, has been trained to let researchers at Zoo Atlanta perform echocardiograms on him while he's awake.