Desert creatures derive water directly from plants, particularly succulent ones, such as cactus. Many species of insects thrive in the deserts this way. Some insects tap plant fluids such as nectar or sap from stems, while others extract water from the plant parts they eat, such as leaves and fruit.
I guess this was the answer to my question about drinking cacti. Can you just give me example of desert creatures?
Desert animals include coyotes and bobcats, spiders such as the black widow, scorpions, rattlesnakes, lizards and many kinds of birds, all creatures already adapted to the desert biome.