Every year, the zoo attracts around a million visitors, most of whom likely pass Kaavan's enclosure and carry on their way. Khan, on the other hand, was spurred into action.
Once back home in California, she launched a petition on Change.org informing others of what she'd seen and calling on them to help bring about a better life for Kaavan- and the response was overwhelming. In a matter of days, more than 30,000 people from around the world had added their names to the petition.
From Khan's single voice, a multitude's joined the call. Together their voices were too loud to ignore.