The cacti, are those growing wild?? or did some one plant them...They are lovely!! Are they considered perrenials??Do they ever go dormant???
The cacti in residential areas are mostly species replanted by the home builders. If, however, indigenous plants can be kept in a yard, that is accomplished whenever possible. A residence with a native saguaro is highly sought.
My sister's place has some original and some replanted cacti, but the land behind them is full of originals, and javelinas (for those in Rio Linda, that's pronounced "ja-VIL'-in-uhs"

) often visit back there, along with hundreds of hummingbirds and other bird species. I'll take some pics.
The cholla is the one I hate; just accidentally brush against it and you get full of its needles. That's why it's also referred to as the "Jumping cactus".
A special permit is required to remove a saguaro from its original site. My brother in law encounters these problems quite often in his construction of new swimming pools. Arizona aggressively protects its native plants.
The saguaro cactus is an Arizona species in the Sonoran Desert and also lives in that desert in Mexico.
Arizona-Sonora Desert Museum