In a hot desert, where the sun shines like a golden fire, a small lizard named Zizi was very thirsty. She had been walking for many hours, and her throat felt dry and scratchy. The desert was full of sand and rocks, but there was very little water. Zizi knew that she had to find shade soon, or she would not survive. She remembered what her mother had told her: "When the sun is high, find a cool place under a rock or a bush."
Zizi saw a big cactus plant, which was green and round. She knew that cacti store water inside their thick stems to survive the dry desert. "If I stay near this cactus, I might find some water," she thought. She climbed up the cactus carefully, but the sharp spines hurt her feet. Suddenly, she heard a soft voice. "Be careful, little one," said a wise old tortoise, who was resting in the shade of the cactus. "The spines are sharp, but the cactus is a friend to all desert animals."