Brown deer, also known as red deer, are large mammals native to various regions, including parts of Europe, Asia, and North Africa. They are characterized by their reddish-brown fur, long legs, and impressive antlers, which males grow and shed annually. Brown deer are herbivores, primarily feeding on grasses, leaves, and shrubs. These animals are social creatures, often found in groups called herds. They are known for their agility and speed, which help them evade predators. Brown deer play a significant role in their ecosystems by helping to maintain plant diversity through their grazing habits.