From The Arizona Republic:
Jaguars are protected as an endangered species, but on Monday night one of the rare felines was euthanized after being captured, released and recaptured by state authorities.
The jaguar, about 16 years old, was put down because of failing kidneys.

And from a Republic update:
_Investigation into the conditions surrounding Macho B’s death suggests that stress and tranquilizers aggravated the jaguar’s kidney problems, which led to the decision to euthanize him Monday.

The news prompted calls for a review of the Arizona Game and Fish Department’s protocol and better protection for endangered species.