Minnesota Zoo Dolphin Calf Dies After Sudden Illness

The 's female dolphin calf, Taijah, died Monday night after "a sudden and acute illness," according to a press release from the zoo.

A necropsy, or animal autopsy, is scheduled for Tuesday to determine the cause of death.

Taijah showed signs of severe illness early Monday, the release says; marine mammal staff and veterinarians had been working since then to monitor and treat the condition.

A Monday ultrasound showed fluid in Taijah's stomach, and she was given medication. She seemed stable until late Monday, according to the release.

“This is a very sad day at the Minnesota Zoo,” said Kevin Willis, the zoo’s director of biological programs, in the release. “Known for her spunky personality and playful antics, Taijah was a favorite among staff and guests alike. She was a bright spot in anyone’s day.”

Taijah was born at the zoo in 2010, part of a breeding program "designed to increase the size and genetic diversity of the population," the release says.

Her mother was Allie, age 24, a dolphin who had been at the zoo since 2008; her father was Semo, the oldest dolphin currently in the care of human, at age 48, the release says.

Another 44-year-old Minnesota Zoo dolphin , after an ailment that had lasted several months.