Thanks for the correction. Cacti aren't found in their natural habitat (as the pictures indicate), I wasn't paying attention when I typed >.< Desert grasses are, thoughThere is no avoiding the sand in those places, even 12 miles out to see there are sand storms. Natural sand is fine in a properly set up enclosure. I would avoid cacti, or at least choose spineless varieties. Cacti are new world plants, they are definitely not something a leo would naturally encounter and their spines could do some nasty damage to a leo's thin skin. There are plenty off other desert plants that could be used.