Dancing With the Stars Backstage Scoop: "Frustrated" Sean Lowe Wants to "Kick a Puppy"

His dancing partner is might be named Peta, but something tells us the other PETA won't be a fan of Bachelor Sean Lowe's latest comments.

"If I'm in the bottom two, I'm going to kick a puppy," an admittedly "frustrated" Lowe told us backstage Monday night at Dancing with the Stars. "I can't be in the bottom two again!"

Sean's sexy rhumba with partner Peta Murgatroyd earned a score of 8-8-8, and Sean was "expecting at least one nine." But what really irked the couple was losing the dance battle challenge to Ingo and Kym.

"I'm frustrated we didn't win that," Sean admitted, adding, "But he's old and I'm not going to fight a geriatric." Snap!

And yet, it's very clear Sean does not wear the pants when it comes to Bachelor fiancee Catherine Giudici—who came to rehearsal this past week to give what sounds like...permission. Sean told us he didn't feel he could give the sexy rhumba his all until Catherine gave her blessing.

"It was like a seal of approval," Sean told E! News. "I was just waiting, asking, 'Can I move forward with this dance?' And she said go for it."

And what if Catherine said no? "We would have come in and done the middle school version," Sean said with a laugh.

For more exclusive backstage interviews, check out E! News at 7 p.m. and 11:30 p.m.

—Reporting by Will Marfuggi