I was on a flight on Saturday SFO-SAN and saw there was a dog and went to confirm it was not sitting near me. I was in 1A and the dog was at the back of the plane. Our plane was delayed due to mx and then we needed to switch planes but kept our same seats. Well apparently there were two dogs on the plane and there were issues with the animals. One was a pet but there was no pet carrier and apparently part of the problem as explained to me by the FA as one of the pax involved in the "incident" was moved to FC. (Due to the delay two FC pax opted to switch to another flight - smart folks!) I then queried that I thought pets needed to be in a carrier and the FA confirmed this was the case so I asked why the pet was not in a pet carrier and the FA just shrugged.
That is all we need - dog fights in the air!