The toxicology report was released Monday. It is included with an autopsy that concluded 17-year-old Carlos Sousa Jr. was killed by "blunt force injuries of the head and neck."
Sousa's two friends also were seriously injured when a 250-pound Siberian tiger escaped its enclosure at San Francisco Zoo on Christmas Day.
Michael Cardoza, a lawyer for the Sousa family, says it's irrelevant whether the teen was drinking or smoking pot before he was mauled. The family is suing the city.
The wall surrounding the tiger's enclosure was found to be 4 feet lower than recommended industry standards.