Local news radio station KCBS reported Thursday that the tiger who attacked three zoo patrons on Christmas Day was underweight, a condition that may have agitated the big cat and made it “frantic for food.”

The three-year-old female tiger weighed about 295 lbs. when she arrived at the San Francisco Zoo from Denver, but weighed only 242 lbs. on the day she killed Carlos Sousa, Jr. and wounded two other zoo patrons after escaping from the tiger enclosure, the station reported. During the last year of the tiger’s life, its keepers made several notations in the daily feeding log that it was “frantic for food,” “very hungry,” and once stole part of another tiger’s food ration. Link