A bit caution judging dog behavier. The following story is true.
In 1984 we trained our upgrading pilots on B-727 at YMX. Parts of the ferry flights FRA-YMX via KEF and back were sold to a Newfoundland dog fan club, with necessary stopovers at Halifax. More than 50 dogs entered the slightly modified cabin at FRA and laid down in front of their proud masters. After landing in KEF they left orderly and did outside nearby what was necessary and expected. They boarded again with grace and returned exactly to their seats/location they had selected before. More than 50 dogs enjoyed the landing at Halifax and left the AC with friendly faces.
Our maintenance staff in the cabin during this trip and the ride back to FRA( again they found their "booked" places by themselves) a week later still insists that not even a drip of dog pee ruined the blue carpetfloor.
Regards