Tatyana Danilova (R) walks her pet pig named LiLou at San Francisco International Airport (SFO) on December 10, 2019 in San Francisco, California. LiLou, a five year-old Juliana pig is a member of SFO's Wag Brigade that brings therapy animals to airport's departure area to greet passengers as they wait for their flights. (Photo by Justin Sullivan/Getty Images)
