J.J. the gorilla took a sick day from Zoo Miami Thursday for his routine heart exam.
The 33-year-old lowland gorilla, who suffers from hypertension, spent the day off exhibit for a complete cardiac exam that included an echocardiogram and an electrocardiogram.
Dr. Alan Schwartz, who typically examines humans, performed the echocardiogram. He and a team of zoo veterinarians found the 475-pound ape in good condition, but said he needs to shed some weight.
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The gorilla also received vaccinations, had his blood drawn and had his blood pressure taken.
He should return to the exhibit by the weekend after recovering from the anesthesia.
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