Rucervus is a genus of deer found primarily in Asia, particularly in regions like India and Southeast Asia. These deer are known for their large size and distinctive antlers, which can grow quite large in males. They typically inhabit wetlands, grasslands, and forests, where they feed on grasses, leaves, and aquatic plants. The most well-known species within this genus is the Sambar deer, which is recognized for its robust build and adaptability to various habitats. Rucervus species play a crucial role in their ecosystems, serving as prey for large predators and helping to maintain the balance of their environments through grazing.