Deer are graceful, herbivorous mammals known for their beauty and agility. They are found in forests, grasslands, and even mountainous regions around the world. Male deer grow antlers every year, which they shed and regrow. These antlers are often used for defense and to attract mates. A young deer is called a fawn, and its spotted coat helps it blend with the surroundings for protection. Deer play an important role in maintaining ecological balance by controlling vegetation and serving as prey for large predators.