Being taunted by a cat

I have a two-story house.  The front upstairs bedroom overlooks the street.  I have my sewing machine in there, but since I only sew a couple times a year, 99% of the time the room belongs to the dogs.

There is a loveseat facing the window where the dogs lay and look out over their kingdom.  Or they stand at the window and watch for intruders.  I previously posted a photo:  Bogie on guard duty  The streaks are the inevitable dog nose smudges.

If I am home when intruders are spied (usually other dogs), there is a brief spate of barking, then they will rush to me so I can see how efficiently they have done their job.  Once I assure them that they are good dogs and have done a good job, all is well and quiet resumes.

Usually.

Today there was frantic whining.  I went to see what was the problem but saw no one on the street.  However, no amount of reassurance would calm the whining.

Suddenly, cacophonous barking fills the bedroom.  A cat is walking in the yard across the street.  Angel tones it down to a whine, but Bogie is baying these loud, deep bass barks.

The cat disappears behind a bush and the barking becomes whining again.  No amount of persuasion can move either dog from the window.  

The cat moves and the barking resumes.  The cat hides and the whining takes over.

Each time the cat moves out into the open, it looks at the window at the dogs.  Yes, the barking is loud enough to attract attention, but the cat does not flee.

Instead, it lingers, staring at the window.  It  appears to be enjoying the reaction it is getting.

I think it is deliberately taunting the dogs.