It is a rare deer species endemic to China. It was widely distributed in the eastern and central regions of China, especially in the marshy areas along the coast of the Yangtze River Delta. Originating about 2 million years ago, the number in history once reached hundreds of millions. However, due to natural changes, narrow dietary habits, and human activity interference, elk rapidly decreased after the Shang and Zhou dynasties and became extinct in China by the early Qing dynasty. Large in size, males can reach a shoulder height of up to 137 centimeters and weigh up to 250 kilograms, with unique inverted three legged antlers. Gentle temperament, good at swimming, and feeds on plants such as grasses and mosses. At the end of the 20th century, elk was reintroduced into China.

It is a relatively large rabbit animal, measuring 50-70 centimeters in length and weighing 2.5-6.5 kilograms. Mainly inhabiting open agricultural grasslands in temperate regions, it has excellent visual, olfactory, and auditory abilities. It is a herbivore that mainly eats grass and herbs in summer, and feeds on tree branches, flower buds, and shrub bark in winter. Running at an extremely fast speed, up to 60 kilometers per hour in a straight line, and being an excellent swimmer. Originating from the Iberian Peninsula, it has been introduced to multiple regions around the world, such as Argentina, Australia, Canada, etc. This species plays an important role in the ecosystem and is the primary target of certain hunting games.

It is a rare deer species endemic to China. It was widely distributed in the eastern and central regions of China, especially in the marshy areas along the coast of the Yangtze River Delta. Originating about 2 million years ago, the number in history once reached hundreds of millions. However, due to natural changes, narrow dietary habits, and human activity interference, elk rapidly decreased after the Shang and Zhou dynasties and became extinct in China by the early Qing dynasty. Large in size, males can reach a shoulder height of up to 137 centimeters and weigh up to 250 kilograms, with unique inverted three legged antlers. Gentle temperament, good at swimming, and feeds on plants such as grasses and mosses. At the end of the 20th century, elk was reintroduced into China.

It is a general term for all species in the bird class and penguin family. Penguins, known as the "boats of the ocean," are one of the oldest waterfowl and are likely to have settled in Antarctica before putting on ice armor on Earth. Most of them are distributed and live in the southern hemisphere. Characterized by the inability to fly; Generally speaking, the legs and knees of a penguin are hidden in its belly, and its feet are located at the bottom of its body. Can live and reproduce in extremely cold climates. On land, it looks like a Western gentleman in a tailcoat, swaying and swaying as it walks, encountering danger, falling and crawling in a disheveled manner. Mainly feeds on krill, squid, and small fish.

The elk (scientific name: Elaphurus davidianus) is the only deer species in the family Deer and genus Deer. Because its head and face are long and narrow like a horse, its horns are slightly different from other deer, its hooves are wide like cows, and its tail is slender like a donkey, it is also known as the Four Elephant. Its horn shape is unique, opposite to the horns of other deer. The front branch splits into smaller branches, while the back branch hardly splits. The limbs are sturdy, the main hooves are broad and fleshy, with well-developed hanging hooves, and there is a loud knocking sound when walking. I prefer swamp and wetland habitats and feed on green grass and aquatic plants. Good at socializing, good at swimming, and enjoys eating tender grass and aquatic plants.

Tigers belong to the feline carnivore family and hunt a variety of animals for food. They are usually accustomed to hunting from dawn to sunset and mainly feed on large mammals. It can hunt prey larger than its own size, and a tiger weighing 250 kilograms can hunt an Indian bison weighing 900 kilograms. Tigers in the wild can eat up to 40 kilograms of meat at a time. Without disturbance, they usually return to the hunting site within three to six days after catching prey to enjoy the remaining food until there is little left. The difference between tigers and other cats is that they are good at swimming.