Dog barking from Paris to Newark

I have never experienced anything like this. It woke everyone up, it yapped nonstop from about an hour into the flight. I went to the back to go to the bathroom and it sounded like it was barking in my ear. I think the poor flight attendants had encouraged her to bring it in the back of the plane to settle down. It was quickly apparent that the dog was WAY too big for the carrier, it could not stand up. Or even lay down comfortably without the expansion panel open (they were). I suddenly realized that it was the mid sized dog I’d seen (misbehaving) at the airport stuffed into that tiny bag. The dog was barking and scrambling to the point that the bag was flipping over. The lady did not care at all and when the flight attendant told her the dog was too big, her response was, no he’s not. It was crazy. What is wrong with people that they would do that to their pet??? I have a whole new level of sympathy for flight attendants, because… what are you going to do?