The museum's opening was delayed until noon Tuesday because of the threat, but it was open as usual through the afternoon.

The exhibit, which opened in late November and will run until April 27, highlights the entire feline family tree, from domestic cats commonly found in homes to feared predators like tigers and lions.

The next Cat Café event is coming up from 11 a.m. to 3 p.m. Monday.​ Admittance is included with museum admission.

The Carnegie Museum of Natural History in Pittsburgh, home to the Tyrannosaurus rex holotype and a famous Diplodocus, will ...