A zoo euthanized a “beloved” North American river otter after her health declined due to her age, Oregon zookeepers said. Tilly, a river otter that was euthanized at the age of 16, which is “geriatric ...

Tilly, a river otter, came to the Oregon Zoo in 2009 as an injured and orphaned pup. She birthed four pups while at the zoo.

Oregon Zoo is mourning the death of their famous river otter, Tilly, at the age of 16. She won the zoo's “Mom of the Year” ...

Tilly, a 16-year-old river otter at the Oregon Zoo known for being "Mom of the Year" and a cameo on the NBC show "30 Rock," died April 30.