This morning we took a hike on the self-guided Nature Trail. Every couple hundred yards there was an interesting placard that described vegetation, plant or animal life, or geology. I did not realize there were mountain lions in the area. Good thing we didn't take Trixie with us on this hike.
The park is part of the Sonoran Desert. I used to think that the desert was mostly sand. Not here. There is a fair amount of plant life and a limited amout of animal life. Water is the key ingredient and both forms of life have adapted to desert conditions.