Moose (Alces alces) are the largest members of the deer family. They are native to northern Europe, Asia, and North America. Moose can grow up to 7.5 feet tall and weigh up to 1,500 pounds. Their distinctive antlers can span up to 6 feet wide and are shed and regrown every year. Moose are herbivores and feed on leaves, twigs, and aquatic plants.

Sambar deer (Rusa unicolor) are a species of deer native to the Indian subcontinent and Southeast Asia. They are also known as sambur, samboo, or sambo. Sambar deer are large and can grow up to 4 feet tall and weigh up to 550 pounds. They have a distinctive coat of reddish-brown fur with white undersides and a prominent pair of antlers that can grow up to 3 feet long. Sambar deer are herbivores and feed on a variety of plants, including grasses, leaves, and fruits.

Elephants (Loxodonta africana and Elephas maximus) are the largest land animals on Earth. They are found in savannas, forests, and deserts in Africa and Asia, and can live for up to 70 years. Elephants have a highly developed brain and are known for their intelligence, social behavior, and strong family bonds. They have a distinctive trunk, tusks, and large ears, and can weigh between 5,000-14,000 pounds. Elephants are herbivores and feed on a variety of plants, including grasses, leaves, and fruits, and can drink up to 30 gallons of water per day.

Leopards (Panthera pardus) are a species of big cat native to Africa and Asia. They are known for their distinctive spotted coats, which help them blend in with their surroundings and hunt prey. Leopards are solitary and nocturnal animals, and are skilled climbers and swimmers. They are carnivores and feed on a variety of prey, including antelopes, gazelles, and monkeys. Leopards are endangered due to habitat loss and poaching, and are protected by conservation laws in many countries.