On December 5, San Francisco Airport (SFO) officials introduced LiLou, the newest member of the Wag Brigade, a group of friendly therapy dogs that roam the airport terminals to provide comfort to harried travelers. However, LiLou is not a canine, but a small breed of pig called Juliana. The two-year-old is the first pig to be certified with the SPCA, Animal Assisted Therapy (AAT) Program, in the United States.