Just before noon Wednesday, officials at Zoo Boise announced veterinary staff were forced to euthanize a male tiger a day earlier, citing significantly diminished health.
Fifteen-year-old Amur tiger Taiga failed to respond to veterinary treatment following a rapid decline in health over the past few days, according to Zoo Boise, leading staff to euthanize the animal Tuesday.
A necropsy revealed previously diagnosed chronic renal failure and large tumors in the cat's spleen. A poor prognosis, poor quality of life and advanced stage of Taiga's renal disease were the deciding factors leading to the decision.
According to Zoo Boise, Amur tigers typically survive 10-12 years in the wild, and 12-18 years in zoos.
Taiga came to Boise by way of Chicago's Lincoln Park Zoo, along with his brother Tundra, in 1999. Both Tundra and a 9-year-old female tiger, Katarina, will remain at the zoo with no immediate plans for securing another animal.