Dogs belong to Chordata, Vertebrate, Mammalia, Orthoptera, Carnivora, Schipoda and Canidae. Chinese is also called "dog", and dogs are distributed all over the world.
Dogs, horses, cows, sheep, pigs and chickens are also called "six animals". Some scientists believe that dogs were domesticated by early humans from the gray wolf, and the domestication time was from 40,000 years ago to 1.5 million years ago. Known as "the most loyal friend of mankind", it is the pet with the highest reproductive rate, and its life span is about 12~ 18 years. In China culture, dogs belong to one of the 12 Zodiacs, ranking 1 1 among the 12 Zodiacs.
Second, cats
Cats, belonging to cats, are divided into domestic cats and wild cats, and are widely used pets in families all over the world. The ancestor of the domestic cat speculated that it was a kind of desert cat, Persian cat, which originated in ancient Egypt. It has been domesticated by human beings for 3500 years (but not completely domesticated like dogs).
Ordinary cats: round head, short face, five fingers on the forelimbs, four toes on the hind limbs, and sharp and curved claws on the toes, which can be extended. Night activities.
Third, pigs.
Pigs are vertebrates, mammals, domestic animals and ancient omnivorous mammals, which are mainly divided into domestic pigs and wild boars. At present, people think that pig is short for pig. Pigs have different physical characteristics according to different breeds; Usually manifested as big ears, long head, short limbs, straight nose, fat body and narrow waist and back. The hair is thick and hard, and its color is usually white, pink, black, brown and fancy.
Fourth, pandas
Giant panda (scientific name: Ailuropoda melanoleuca): the only mammal belonging to the genus Ailuropoda of Xiong Ke, a carnivore, with a head length of 1.2- 1.8m and a tail length of 10- 12cm.
The weight is 80- 120kg, and the maximum weight can reach 180kg. It is black and white, with round cheeks, big dark circles, chubby body, iconic walking posture, with eight characters in it and claws as sharp as scalpels. Is one of the cutest animals in the world.
Five, the tortoise
Turtle (Chincmys reevesii? ) is one of the turtles. Sometimes specific? Turtles are also called golden turtles, grass turtles, mud turtles and mountain turtles. Taxonomically, it belongs to reptiles, turtles and turtles, and is one of the common turtles. This is an ancient reptile.
Its characteristic is that its shell is very strong. When attacked, turtles can retract their heads, tails and limbs into their carapace (except turtles and snapping turtles). Most sea turtles are carnivores, feeding on worms, snails, shrimp and small fish, as well as stems and leaves of plants.
Turtles are distributed almost everywhere in China, but the yield in the middle and lower reaches of the Yangtze River is higher. It is also produced in various parts of Guangxi and Shandong, especially in southeastern and southern Guangxi. Foreign countries are mainly distributed in Japan, Brazil and North Korea.