The black swan is a bird species belonging to the family Cynoglossidae in the order of geese. The black swan is covered with flocculent gray feathers on its back; The neck is slender and often curved into an elegant "S" shape; The beak is bright red with a "V" - shaped white discharge at the front end; The iris is reddish red, and the tarsus and fins are black. Its physical characteristics are that except for a small part of the primary feathers that are white, the rest of the body's feathers are bright and black, hence the name.

The southern elephant seal is a mammal belonging to the family of seals and the genus of elephant seals. The male animal is 6.5 meters long and weighs 4000 kilograms. The female is slightly smaller, with a body length of 3.5 meters and a weight of 1000 kilograms. Male reproductive animals are about four times larger than females. The body is spindle shaped, very thick and fat, but the body is soft and can be bent into a U-shape towards the back. The male animal's nose is a long cockscomb, which swells when excited or angry. The body color is silver gray, with the old beast being light brown and pale yellow, forming a dirty color tone, and the back side is darker than the belly side. Small incisors, large canine teeth for male animals.

Armadillo is a mammal of the family Armadillidae in the order Heterodontoides. The bone armor covers the head, body, tail, and outer legs. The bone armor in the head, front half, and back half is separated, and the bone armor in the body forms a band shape, allowing for flexible movement; Having sparse hair in areas of the body without bone armor; There are strong claws on the front foot. The armadillo is named after the nine layered ribbon on its body. A armadillo can eat 100 kilograms of poisonous spiders, scorpions, ants, beetles and other insects in a year, which plays a positive role in pest control to a certain extent.