CHICAGO (AP) - The veterinary staff at Chicago’s Shedd Aquarium has
euthanized a long-time resident river otter because of deteriorating health.
At 21 years old, Rio lived nearly a decade beyond the species’ median life
expectancy of 12 years.
The Shedd Aquarium says despite her age, Rio still had a zest for swimming
around her exhibit and playing with toys, especially those stuffed with
But the aquarium says she was euthanized Tuesday because her quality of life
Ken Ramirez is vice president of animal care and training. He says “Rio
became a testament to the zoological community’s emerging expertise in
geriatric animal care and welfare.”
Rio came to Chicago from the Little Rock Zoo in Arkansas in 1992 at a time
when river otters were considered endangered in Illinois.