I had a little female terrier that I took on a trip, putting her on the back seat of my C-175, When we were at altitude she took one look out the window, then got down on the floor for the rest of the trip. I had trouble coaxing her out when we landed.
My Golden Retriever, Dakota loved to look out the passenger windows when I took him up in my Cherokee Dakota. I’m certain He knew he was flying and probably felt like an eagle.