Cat!

I had written this before, but could not provide you with episode no. Now, I can.

Season 1 Episode 11 ( 43:15 of 43:25 )

Red John calls PJ in Mexico, ( he is mar episode) and gives the bad man laugh. At a second, we hear the sound of a cat.

Also about the he is mar thing, i believe it is not mar, because there is a very steep curve after the straight line. It can't be r, it is another m. It is half of the next m.

So, it is mam. 

Now, going back to my point, who loves cats in the series? Or even, who owns a cat? (Tigers are also cats, makes sense that RJ has a cat)