New Breeds to Compete in Westminster Dog Show

Diane Sawyer with the top stories that have people buzzing this week.
1:44 | 01/29/13

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Transcript for New Breeds to Compete in Westminster Dog Show
And here's what vaulted to the top of our "instant index" tonight. The two new contenders for top dog. The westminster dog show announcing they will include two new breeds this year. For the first time, tree walker coonhounds, which can actually climb trees. Watch that guy go. And also contenders, russell terriers, reminding us of the other russell terrier who stole the show, uggie, from the movie "the artist." He will not compete, but he will cheer on some of his distant cousins. And he did it again. Daredevil nik wallenda, who walked a high wire across niagra last june. Well, today, he took a nine-minute stroll, 185 feet above a highway in his hometowns of sarasota, florida, 600 feet, no nets, no safety rope. And listen. It is windy. It's very windy. Midway, he reminds us that nerves of steel are all relative. Props to my great-grandfather carl wallenda. He would have stopped in the middle of thcable and done a headstand. At the end, nik kneeled, pumped a fist, saying his secret is practice and prayer. And, why is the man in black number one again tonight? ♪ I feel into a burning ring of fire ♪ ♪ I went down down down ♪ ♪ and the flames went higher ♪ ♪ and it burns burns burns ♪ johnny cash, of course, and today the u.S. Postal service announced that cash is their pick for a new stamp. It is the first in a series that will honor music legends, on sale later this year.

This transcript has been automatically generated and may not be 100% accurate.

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