During Fall Break, my husband took the kids up north to Camp Verde, Sedona and Flagstaff. They did a little hiking in Sedona.
In addition to the flora and fauna, they met this little guy
Yep, that's a tarantula. Better than a rattlesnake, I say.
The contrast between Sedona and Flagstaff is amazing even if they are only about 30 miles apart. Sedona is red, Flagstaff is green (white in the winter).
The best part of it all - these places are all an easy day trip from Phoenix.