What animal can clean the earth?

1, dung beetles, scientific name dung beetles. When dung beetles finds a pile of shit, he will make a part of it into balls with his legs and roll it away. It will hide the dung ball first and then eat it. Dung beetles also provide food for their offspring in this way. A pair of breeding dung beetles will hide a dung ball, but then the mother dung beetle will make the dung ball into a pear shape with mud and lay eggs on the neck of the pear-shaped ball. After hatching, larvae feed on dung balls. By the time the dung balls are eaten up, they have grown into adult dung beetles and emerged from the ground. Chinese medicine dung beetle. In the Compendium of Materia Medica written by Li Shizhen in the Ming Dynasty, it is recorded that dung beetles also have some nice names, such as pushing bowls, carts, black cows, armored generals and nocturnal generals. Li Shizhen explained that dung beetles are called dung beetles and generals because they can "spin pills, get pills and call a car", because they "have deep eyes and a high nose, and look like Hu Qiang, with black armor on their backs and warriors". Dung beetle is a large beetle with a body length of 23.7-40mm and a width of 16.8-23mm. It is short and wide, oval, with a very round back and a black or dark brown body. It is a clean guardian of human beings and a medicinal insect. More than 2000 years ago, there was a record of dung beetles used as medicine in Shennong Herbal Classic. The drug taker was a male with 1% dung beetles. The medicine is salty and cold, and has the functions of relieving convulsion, removing blood stasis, relieving pain, expelling toxin and relaxing bowels. It is mainly used for treating epilepsy, convulsion, constipation and dysentery. External use for treating hemorrhoids and furuncle. 2. Introduction to Crow Crow refers to some kinds of crow birds, whose whole body or most feathers are black, commonly known as "crow". Bald-nosed crow is the most common species in rural areas of China. Their feathers are black with purple metallic luster. The mouth is long and thick, the base is bald, and there is no feather to cover the nostrils, so it is called a bald-nosed crow. In winter, bald-nosed crows are often mixed with other crows. Hundreds of crows fly around and sing nonstop, which makes people feel sad and bored, so they are considered ominous birds. Bald-nosed crows nest in high trees in droves. A tree can have up to 30 crow nests, and there are as many as 1200 nests abroad. Nesting materials are collected by males, and males and females nest together. The nest is rough and shaped like a laundry list. Each nest lays five or six eggs. Female birds hatch eggs, and the incubation period is 16 days-18 days. After the chicks hatch, they are fed by their parents, fly out of the nest after 29 -30 days and eat by themselves. In spring, bald-nosed crows often gather in large groups to peck at the sown corn. Sorghum and peanuts are also harmful to seedlings; But from May to July, with the increase of the number of insects, they mainly eat agricultural pests and bring them back to their nests to feed their young birds. In autumn, crows are harmful to crops. After the autumn harvest, they peck at the grains scattered in the fields and underground pests all winter. Besides bald-nosed crows, white-necked crows, western Western jackdaw crows and small-billed crows are also common. Crows are better at guessing other people's intentions than gorillas. A new study proves that crows have the same perceptual ability as primates, and their "intelligence" is not inferior to chimpanzees and gorillas. This research report was completed by two researchers from the Department of Animal Behavior and Experimental Psychology, University of Cambridge, UK, and published in the journal Science on June 5438+February 10. Crows are smarter than we know. Birds stand on the nest and let angry opponents spray formic acid on them. Birds stained with formic acid can use this "natural insecticide" to kill parasites. Crows who live in urban areas and eat carrion are used to crushing nuts for them with the help of passing cars on the road. When the pedestrians disperse, you can pick up the broken fruit and have a good meal. In the world of birds, crows, ravens and scorpions are not "stupid birds without intelligence", on the contrary, they are generally regarded as "smart" animals. The human impression of crows seems to have a long history. Even in Aesop's Fables, a story of "a crow drinking water" was woven. Other online information. Seagull is an environmentally friendly animal, which is good at preying on locusts, moths, beetles, walking insects and mice, so that trees can be protected from pests and grow healthily. At the seaside and beach, it can eat all the leftovers that people throw away at will, and has made great contributions to keeping the sea and beach clean, so it is called "volunteer cleaner". Ant is a kind of carnivorous black ant, which eats animal carcasses that people throw away or die on the ground. After they are full, they will take the residue back to the nest and store it, which plays a very good role in protecting the environment on the ground. Except stone, brick, glass, metal, rubber, etc. All other rotting organic wastes and domestic garbage can be digested by earthworms and converted into organic fertilizers. The digestive system of earthworms is amazing. It can secrete an enzyme that decomposes wood fibers. As a result, some weeds, sawdust, animal bones and fishbones, eggshell skins, rags and other filth have become delicious in their mouths. According to experiments, 654.38 billion earthworms can swallow 40 tons of garbage a day. If you treat the garbage of an ordinary family, it is enough to raise 2000 earthworms. Earthworms can be described as loyal "environmental guardians". When vultures fly at high altitude, they will eat up carrion quickly once they find it. Because it feeds exclusively on carrion, it won't let dead animals die suddenly in Shan Ye, thus avoiding environmental pollution. Crows have a keen sense of smell. If it smells a little rotten, it will fly in time to "clean up". Crows have been cleaning up garbage for the earth all their lives, and they are out-and-out "scavengers".