ON A TWO-HOUR EDITION OF "20/20," FRIDAY, AUGUST 17 ON ABC

"Extreme Parenting" with Barbara Walters: An Hour of Anything But Typical Parenting Airs at 9:01 p.m., ET

"When Animals Strike Back" Airs at 10:00 p.m., ET

9:01-10:00 p.m.: "Extreme Parenting"

In an era when people obsess over their children, and the topic of how to raise kids has become an area of daily debate, wait until you meet these parents who are taking it to the extreme: five dwarf children being raised by a couple who are little people themselves, and insist on teaching the kids how to maneuver in an "average" size house so their children can be prepared for the real world; the father who became an internet sensation when he had enough of his daughter's rude rants on YouTube, and decided to teach her a lesson she wouldn't forget by shooting her laptop and posting the video on the Internet; the oldest mother in the US to give birth to twins. And how about parents who use bribery - sometimes as extreme as trips to the Grammys - to persuade kids to get good grades? Anchored by Barbara Walters with reports from Walters, Elizabeth Vargas, Sharon Alfonsi and Cameron Mathison, "Extreme Parenting" delves into wacky, unconventional and sometimes controversial parenting methods. (OAD: 5/4/12)

10:00-11:00 p.m.: "When Animals Strike Back"

From stingrays attacking swimmers off the coast of San Diego, to an alligator biting off a boy's arm in Florida, to shark attacks, raccoon attacks and even a tiger eating a man at a Copenhagen zoo, the summer of 2012 is turning out to be the summer of wild animal attacks. Why and when do they attack? And are we underestimating how wild some wild animals really are? "When Animals Strike Back" takes viewers across the USA to meet people working and living everyday with wild animals, and to South Africa with new details on the attack and condition of American Andrew Oberle, who was viciously mauled by chimps inside a chimpanzee sanctuary. The hour also includes reports on the safety of our zoos and animal parks; why more and more Americans are trying to domesticate wild animals in their homes; and animal trainers caught in the cross-hairs.

"When Animals Strike Back" is anchored by Elizabeth Vargas with reporting from Dan Harris, Jay Schadler and David Wright.

Preview links: http://abcnews.go.com/2020

David Sloan is executive producer of "20/20".