On December 5, San Francisco Airport officials introduced Lilou, the __1__ member of the Wag Brigade, a group of therapy (治疗) dogs that __2__ the airport terminals to provide __3__ to annoyed travelers.__4__， Lilou is not a dog, but a small pig.
Lilou is more than just a pretty face.The __5__ animal can greet fans with her snout (大鼻子) or wave, thank them with a shake, and even __6__ them with live music on her toy piano.It even takes a bow after each __7__！
As if that is not enough, Lilou can push a ball with her snout.She is __8__ housetrained, two hours at a time.
The idea of Lilou __9__ a therapy animal came from her owner, Tatyana Danilove.But of course, having a(n) __10__ manner and love for humans is not enough to __11__. Lilou received the same __12__ as the dogs and only after she __13__ with flying colors, was she included on this __14__ Wag Brigade family that includes 300 dogs.
Given that Lilou’s __15__ is still not set, there is no sure way of __16__ when she will be at work.Airport spokesman Doug Yakel says they __17__ the pig at least once a month and adds, “We may end up making her __18__ a surprise.” When not __19__ at the airport, Lilou can often be found bringing __20__ to the sick at local hospitals and visiting the elderly at retirement homes.
