Mystic, a female mountain lion who lived at the Phoenix Zoo for the past 17 years, has died. Mystic, 18, was declining ...

Mystic the Mountain Lion has died, the Phoenix Zoo said on May 15. She was humanely euthanized due to advanced renal failure.

Mystic, a mountain lion at the Phoenix Zoo, was euthanized due to renal failure. Mystic and her sister, Sierra, who died in February, arrived at the zoo as orphaned cubs in 2007. Two new mountain ...