'Surprisingly they don't make sandstorms...'
The Desert Slime can commonly be found in the Glass Desert.
Slimepedia
Diet
Fruits and veggies.
Favorite
Their favorite foods are Prickly Pears.
Slimeology
Desert Slimes thrive in sandy areas (Including the "Sandy area" with the 2nd tabby gordo), but are usually found in the Glass Desert. Its diet is similar to that of a Grass Slime, so fruits and veg.
Rancher Risks
Desert Slimes pose no known risks to ranchers.
Plortonomics
Back on earth, Desert Plorts are were used as good luck charms.
Appearance
Desert Slimes are yellow slimes that have a cactus on its head. Most largos of this type have a cactus on their head, so they do not get mixed up with others.