1 once the bison herd was the most spectacular herd on the earth (more magnificent than the wildebeest herd migrating on the Serengeti prairie in Africa today), but later it was madly killed by Americans, making the bison endangered. In the past few years of the19th century, the number of bison in North America has dropped sharply by more than 30 million. Before 1900, only 800 bison lived in the wild. This massacre not only seriously endangered the survival of bison species, but also ended the grazing life of many American Indians.

Alaska was developed by the Russians in those days, mainly for hunting sea otter skins. They got sea otter skins in Alaska, and then sold them in China at a staggering price. It is said that there was a Russian who captured tens of thousands of sea otters at one time, skinned and fleshed them, and sold them at a high price, making huge profits. In less than a hundred years, the sea otter was almost extinct.

The word "Galapagos" means "turtle" in Spanish. In the 18 and 19 centuries, whalers and pirates sailing in the Galapagos Sea often used this turtle as a food supplement. According to their logbooks, they sometimes catch as many as 250,000 giant turtles. The management of Galapagos National Park in Ecuador issued a statement on 24th that lone George, a rare elephant turtle living in the park, died at the age of over 100. Lonely George is the last known subspecies of tortoise on Pinta Island in Galapagos Islands, and its death marks the extinction of this rare species.

Sparrows were listed as one of the four pests by China before and were brutally killed. According to incomplete statistics, more than 200 million sparrows were wiped out in China only in 1958. From the end of 1957 to April of 1958, Henan, a major agricultural province, claimed to have killed more than 1 100 million sparrows.