A zoo euthanized a “beloved” North American river otter after her health declined due to her age, Oregon zookeepers said.

WILLIAMSPORT, Pa. — The Hiawatha is in the West Branch of the Susquehanna River in Williamsport, and staff members are adding ...

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” ...

Here's what to know about Tilly. At 16, Tilly was the oldest member of the zoo's North American river otter ...