If you look at the bottom of their hut in the right corner of their habitat, the red pandas often stick their heads out of the “dog door” or quickly weave out and back into the building. Most times when I’m at the zoo (former WP resident so I went a lot in the last year) I see them briefly that way if they’re not sleeping. They also love the cold, so expect to see them on cold days, but not a great chance on hot ones!