Although it is very hot in the desert, there are still animals that adapt to the climate. These animals are snakes, lizards, tarantulas, the dingo, porcupines, and coyotes.
There are also some common plants in the desert. They are cactus, shrubs, thorn tree, prickly pear, and Saguaro.
One type of competition would be between coyotes and rattle snakes. Both of them fight over food and especially water, since it is very scarce.
An example of a predator-prey relationship is between snakes and rodents. The snake is the predator and the rodent is the prey. While the snake hunts the rodent, the rodent fights to survive.