In an unusual moment at a Reno campaign rally, Hillary Clinton started barking like a dog.

Clinton was illustrating her disbelief at the idea that Republicans want to repeal the Wall Street overhaul legislation known as Dodd-Frank because "they say the great recession was caused by too much regulation on Wall Street." This brought to mind a campaign radio ad played in Arkansas during one of Bill Clinton's races, Clinton told the crowd.

"One of my favorite, favorite political ads of all time was a radio ad in rural Arkansas where the announcer said, 'wouldn't it be great if somebody running for office said something we could have an immediate reaction to whether it was true or not. Well, we have trained this dog and the dog, if it is not true, he is going to bark.' And the dog was barking on the radio, and so you know people were barking at each other for days after that," she said.

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"I'm trying to figure out how we can do that with Republicans," Clinton continued. "You know. We need to get that dog and follow them around and every time they say these things, like, 'Oh, the great recession was caused by too much regulation' -- arf, arf, arf, arf!"

The line was received well, and some in the audience seemed to join in the barking.

Clinton also expanded on arguments she made in Elko, calling on President Obama to name a Supreme Court justice to fill the vacancy left by Antonin Scalia's death.

She countered the argument made by Republicans that there isn't enough time for a new nomination.

"The longest contested Supreme Court nomination of Clarence Thomas lasted 100 days," she said. "President Obama has about 340 days left, so he has plenty of time."