Hershiser's pup, a 2-year-old Yorkshire terrier named Popcorn, went missing late on July 4th in the Highland Park area.
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Hershiser offered a $1,000 reward on Twitter.
According to an update posted Thursday evening, Hershiser posted a photo of Popcorn and his other Yorkie Peanut, saying they've been reunited.
"Popcorn and Peanut back together!" he wrote. "So grateful for all your help! Popcorn in my right hand!"
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