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.

But Tishman Speyer, which owns about two-thirds of 30 Rock, must replace it at a time when companies increasingly prefer newly-minted, triple A-rated digs to buildings that are nearly a century old.

The Four Seasons co-creators Tracey Wigfield and Lang Fisher spoke to TheWrap about how they changed the show from the movie.

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

Tilly, a 16-year-old otter, known for her motherly instincts and cameo on "30 Rock" has died. She was humanely euthanized April 30 due to declining health and old age, Or e gon Zoo said.

She also once appeared on national television. In 2012, “30 Rock” aired a photo of her, calling out her resemblance to Tracy Morgan. Rest in peace, Tilly. – Lizzy Acker covers life and ...

Most people would assume that the zany worlds of “30 Rock,” “Never Have I Ever” and “Great News” would be more difficult to write than a grounded relationship comedy. But that wasn’t ...

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 ...