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.

“Young river otters are extremely dependent on their mothers, and Tilly not only raised her own offspring but three other ...

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” ...

This is a very sad time, especially for Tilly’s care staff,” said Jen Osburn Eliot with the Oregon Zoo, in a statement.

The Oregon Zoo said goodbye to a member of the otter family Wednesday. Tilly, the zoo’s oldest North American river otter, ...

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," ...

Kai had lived at the Sacramento Zoo since 2017, where she brought joy to all guests and staff, zoo officials said.

Kai the North American river otter had lived at the zoo since 2017. Early Monday morning, zookeepers found Kai unresponsive ...

With the demise of the wolverine (Gulo luscus Linnaeus) in the Adirondacks in the late 1700’s or early 1800’s, the river otter became the region’s largest member of the weasel family. Adults weigh 5.4 ...

It takes three years for an otter cub to master the complexities of fishing. Watch as a bevy of otters learn how to fish from ...