Flying with pets, especially dogs, is more and more common nowadays. We wouldn’t complain one bit if we got to travel with this adorable good boy. We hope his fellow passengers gave him lots of treats.
And then they ask why people avoid going to airplane bathrooms like the plague. In any case, this does not justify tending to your bodily functions anywhere other than a restroom. If you don’t want to use the bathroom during a flight, it’s fine: hold it in until you’ve reached your destination.