What animal is born at 150 lbs & 6' tall?

From Africa's Serengeti to California's grasslands, some of nature's most dramatic moments with animals are caught...using the latest technologies, HD camera lenses and computer graphics...this two-part series will take us inside the animal to look at the bioengineering of "how animals work."
NATURE: MOMENT OF IMPACT...HUNTERS AND HERDS...7pm

This is the last installment in the groundbreaking NOVA series that began in 1987 and followed seven students starting out at Harvard Medical School. Over the last two decades, NOVA has documented these individuals' trials and tribulations as they struggled to become doctors and has continued to check in on the progress of their medical careers. From divorces, to death, dealing with patients and balancing time at work and at home, NOVA's cameras were there to follow each major milestone in these doctors' lives. Candid, in-depth interviews have given viewers a real sense of what each person has to deal with day in and day out since they made the decision to practice medicine. Now, we return one last time to get an update on the remaining six (one switched careers) and see what kind of doctors -- and people -- they have become...NOVA...8pm