At the start of the show, Mark and Pauley got along just fine, but along the line, fans of the CBS series couldn’t help but notice something was off between the two. Rumour has it that the feud between Harmon and Pauley all began with Harmon’s dog.
The actor was reported to have continuously brought along his pet each time he came on set. Many of the other actors were said to be uncomfortable with the situation but were afraid to bring it up since Harmon was also a producer of the show.
Pauley however broke the ice and voiced her displeasure, this marked the beginning of the cold war that is believed to still be ongoing between them.
Fans noticed that since the news of the fallout came out, the writers and producers of NCIS had skillfully ensured that they never had any scenes together.
Many have also attributed Perrette’s resignation from the show to this, even though the actress repeatedly debunked this notion.
Since there has been neither an attempt to clear the rumours nor a public reconciliation between the two, we are left to assume that the feud is still ongoing.