Dr. Justin Allen, a veterinary cardiologist, performs a cardiac ultrasound with members of the Veterinary Services Department within the Chicago Zoological Society, on Bakari, a 6-year-old male ... more 
Dr. Justin Allen, a veterinary cardiologist, performs a cardiac ultrasound with members of the Veterinary Services Department within the Chicago Zoological Society, on Bakari, a 6-year-old male western lowland gorilla in an examination room as the team performs physicals on two of the Brookfield Zoo's six gorillas, Thursday, March 10, 2011, in Brookfield, Ill. During the physicals performed every couple of years, the team draws blood to test cholesterol, metabolism, kidney and liver functions, performs dental and eye exams, takes radiographs of the chest and abdomen, and the team also does a cardiac ultrasound. less 
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Associated Press | Photo By M. Spencer Green
Thu, Mar 10, 2011 5:00 PM EST