Shark Tank': Lori Greiner, Robert Herjavec Preview Season 5, Answer Burning Questions

Season 5 of the ABC series bows Friday; quips Herjavec, "We are so much nastier to each other than in previous years. Maybe it's because they don't feed us."

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Shark Tank': Lori Greiner, Robert Herjavec Preview Season 5, Answer Burning Questions

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