Tilly was the oldest member of the Oregon Zoo’s North American otter family at 16. The median life expectancy for river otters is 12.9 years. So Tilly was considered geriatric, according to the zoo.

“This is a very sad time, especially for Tilly’s care staff,” said Jen Osburn Eliot with the Oregon Zoo, in a statement. “Some of our keepers were here the day she first arrived in 2009 as ...

The Oregon Zoo said goodbye to a member of the otter family Wednesday. Tilly, the zoo’s oldest North American river otter, was humanely euthanized at age 16, due to advanced age, according to a ...

Tilly, the North American river otter, famed for nurturing skills as adoptive mother to orphaned pups, dies at the Oregon Zoo at 16 years old, officials said.

Tilly, the North American river otter, famed for nurturing skills as adoptive mother to orphaned pups, dies at the Oregon Zoo at 16 years old, officials said.

Tilly, the North American river otter, famed for nurturing skills as adoptive mother to orphaned pups, dies at the Oregon Zoo at 16 years old, officials said.

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 ...