Gidget, the 15-year-old dog best known for her Taco Bell ad campaign, died of a stroke Tuesday in Los Angeles, California, said Sue Chipperton, her trainer. Uttering the words “Yo Quiero Taco Bell,” Gidget, a female dog, played a male dog in the commercials. She was cast as the girlfriend of the Taco Bell Chihuahua, but the director changed his mind at the last minute and made Gidget the lead dog, Chipperton said.