The eastern grey kangaroo is a large marsupial native to eastern Australia. They are known for their powerful hind legs, which allow them to hop at high speeds and cover long distances. Adult males can weigh up to 66 kilograms and stand over 1.5 meters tall, while females are generally smaller. These kangaroos are herbivores, primarily feeding on grasses and leaves. They are social animals, often found in groups called mobs, which provide protection from predators. The eastern grey kangaroo is also a key species in its ecosystem, helping to maintain the balance of plant life in their habitats.