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.

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

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” ...

@al.leycat13 added, "Oh, he's so squealing happy, and it makes me happy too ... because they're cute, too! At birth, river otters weigh less than a pound (around 5 ounces or so), but they ...

Tilly, a 16-year-old North American river otter at the Oregon Zoo known for being a mom and having a cameo on the NBC show "30 Rock," died April 30. Tilly was adopted by the Oregon Zoo as a pup ...

Zoo staff euthanized the 16-year-old otter Tilly, who had a cameo on NBC's '"30 Rock," following a decline due to her age, the Oregon zoo said.

"Young river otters are extremely dependent on their mothers, and Tilly not only raised her own offspring but three other young pups who had lost their moms and needed a second chance," Osburn ...