As our 5ers got bigger, our dogs got smaller. :B
Started with a 17 ft MeeToo and a 65 lb dog, four rigs later we have a 29 ft and two 20 lb dogs.
The dogs will run from gate to gate whinging when they know we are loading up - just to remind us they are there. They worry that they *might* get forgotten. They each have their own bed in the back seat of the truck and seatbelt.
Our two siamese are elderly and on meds, so we have started taking them with us. They are less excited about traveling - it would not be far from wrong to say they hate it. They travel in a carrier belted in between the dog beds. Once we settle for the night, and they have their food, bed and laps, they are fine