One of three red wolf pups born at a North Carolina museum has died.
The News & Observer reports the Durham Museum of Life and Science says a litter of pups was born on April 21, and the two males and one female were in good health during a checkup last Friday.
Animal department director Sherry Samuels said museum staff watching the family Saturday noticed one pup was separated from the other two. Samuels said staffers entered the exhibit and found the female pup dead.
Testing is being done to try to determine the cause of death.
The only wild population of endangered red wolves is in eastern North Carolina. The U.S. Fish and Wildlife Service said last week the population is unsustainable and could be wiped out within a decade.