I didn't think this needed to be said, but
then I witnessed a lot of people sticking their hands in the
close proximity of the chollas and getting hurt (about 4 people
in the less than half hour we spent at Cholla Cactus Garden) so
I guess there is need to say it. Although some cacti appear
soft and fuzzy, their spines penetrate the skin easily and are
painful and difficult to remove. You've been warned now :)