"Escapes are usually few and far between and usually we can pinpoint them," Lemur Center Manager Greg Dye said. "We're not exactly sure yet how they got out."
After the two failed to show up for a head count on Sunday morning, worried staff hit the streets searching.
"It's like a parent of a teenage kid that is coming home late -- concerned, but in the back of your mind you know they're probably ok," Dye said. "While we were out there looking and we were getting these calls ...that they're at the Christian Academy in the library is something we weren't prepared or didn't expect."
Berisades and Ivy were found at Cresset Christian Academy in Durham on Monday.
"That was just like absolutely crazy, you feel like you're ... in a dream and a lemur walks by, except you're at work and it's in Durham," Cresset Christian Academy Teacher Anna White said. "We were feeding them as we went, kind of like the trial of bread crumbs. We threw some in the library and they just went right in. They loved it, they ate more than our kids do."
Berisades and Ivy kept eating and White says they even looked like students in the library.
"I won't name any names, but they definitely behaved better than some of the students," White said. "To have these two creatures from half way around the globe come trotting up and just look at you like, 'I'm here, you're here, what's the big deal,' was just incredible."