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.

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.