My doxie-poo Sweet Pea (who just turned one year) is way too short to see the layout when she comes into the room, but when I pick her up, she likes to see stuff moving. She does travel well, though, as can seen from a very recent 737 ride...
When she was a little puppy in October, I once had her do a Godzilla impression on the layout. She would only walk down the tracks...