It appears large rats have taken up residence in Waterloo, Ont.

Olivia Masiuk and her friend were walking uptown last week at around 2 a.m. when they spotted the rodents.

“All of a sudden, a massive rat comes running by my foot,” she recalled. “I was like, what the hell is that?”

So they did what any social media-savvy students would do and pulled out their cameras.