In China, every year, 1, 2 1 100 million wild animals die from cats. How to treat stray cats is correct?

There are three main ways: asylum, euthanasia and TNR. As human beings realize the harm of stray cats, the management of stray cats is gradually improved. At present, there are three main ways: asylum, euthanasia and TNR. The first effect is average, and the second is against animal ethics. At present, the third TNR is advocated, that is, trapping, sterilization and release, which can reduce the number of stray cats and avoid direct killing, and is also a relatively more acceptable scheme.

Investigation: In China, at least 12 1 100 million wild animals die from cats every year? The statement comes from a paper of Nanjing University. The data of 12 1 100 million is estimated based on questionnaires, not the real data obtained by statistics. Stray cats are indeed harmful to the ecology, but it is difficult to accurately quantify the harm at this stage.

Some time ago, there was a lot of controversy about the harm of stray cats to wild animals. The incident originated from a paper published by the Animal Behavior and Protection Laboratory of the School of Life Sciences of Nanjing University in the journal Biological Protection. It is mentioned in the paper that according to calculation, more than 1, 2 1 100 million wild animals are killed by stray cats or stray cats every year in China, and then what? Every year in China, at least 1, 2 1 100 million wild animals die from cats' mouths? The statement has also spread.

First, the data reflected in the questionnaire is not necessarily accurate. The larger the scope, the greater the uncertainty of the estimator.

Guo Peng, an associate professor at the School of Philosophy and Social Development of Shandong University, pointed out that the questionnaire survey method used in this paper of NTU lacks certain objectivity, and subjective factors and the provinces and regions where the questionnaire is distributed will have a great influence on the results. Later, the author of the paper said? Fight? Response, indicating that provincial differences have little effect on the results. However, the author did not explain clearly some other questions in the questionnaire. Like in the questionnaire? How many animals do stray cats bring back in a year? The answer to this question mainly depends on people's subjective memory, which may not necessarily reflect accurate figures.

So besides, has anyone assessed the harm of stray cats to the ecosystem?

Another study published on 20 13 estimated the harm of stray cats to wild animals by summarizing the predation probability of cats to different animals and the distribution of cats in the United States [4]. Its author, Peter P. Marra, is also one of the authors of the paper of Nanjing University. Because it is impossible to make a detailed statistics on stray cats, this paper makes a lot of approximate estimates on the basis of collecting relevant research. When the estimated data is extended to the whole country, the number of animals killed by cats is very uncertain: birds are about1.3-400 million, and small mammals are about 630-223 million, which is also mainly used as a reference.