Some canyons are called arroyos. Arroyos are formed when it rains. As the water rushes downhill, it makes the levels that form canyons. There are many animals in the desert. Both are big and have to travel long distances for water at a spring, or an oasis.
Camels are also extremely big.
They have one or two humps used for storing water and food. For this reason camels need very little water. Camels were often used as transportation by people of the desert. Another fairly large animal is the addax. The addax is a desert antelope.