"She looks like she's ready to kick your ass," Helmers tells The Dodo. "But she's not like that at all. I have no problem placing her with children.
"I call it her infectious smile because I think it's very endearing."
But, for the last two months, Helmers has been placing ads about the 6-year-old dog on adoption sites without luck.
The trouble is, for Helmers to get Smiley to sit for a picture, she often uses a treat. And when Smiley sees the treat, she can't help but smile that complicated smile.