The Henry Vilas Zoo recently welcomed two new members to its family.The zoo announced Wednesday that two North American river ...

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.

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," ...

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

A “beloved” river otter named Tilly was euthanized in Oregon, zookeepers said. Screengrab from Oregon Zoo A zoo euthanized a “beloved” North American river otter after her health declined ...