The CBS showNCISis massively popular all around the world.
Like any long-running series,NCIShas also experienced its fair share ofcast dismissals and shake-ups.
The problems reportedly began back in 2016, when Harmon brought his dog to work.

According toThe Wrap, the dog bit a crew member (who ended up needing 15 stitches).
Sources toldThe Wrapthat Harmon brought the dog back on set after the incident, which made some people uncomfortable.
It was simply scheduled that they did not work the same days."

The statement fromCBSreads, “Pauley Perrette had a terrific run onNCISand we are all going to miss her.
Over a year ago, Pauley came to us with a workplace concern.
We took the matter seriously and worked with her to find a resolution.
We are committed to a safe work environment on all of our shows.”