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You may be a lover of these little cats or be completely indifferent. No matter which side you lean on, the reality is that you should be grateful that cats exist.
According to Alan Beck from Purdue University, cats are expert predators and when necessary (due to changes in the ecosystem, abandonment, modification of the source of resources, etc.), they can switch to hunting behavior. According to Beck, cats are the ones that hunt the maximum number of small animals. In Britain alone there are 9 million cats and in one year they kill 200 million small animals.
“One of the main roles cats play,” Beck explains in his book Between Pets and Humans, “is pest control. It is known that they kill rats and mice that invade barns. Cats in India play this role extremely efficiently and reduce a significant amount of cereal loss caused by pests. If rodents are not controlled, humans will soon face food shortages.”
Another study analyzed what happened on an island in New Zealand when almost the entire cat population of the island was eradicated. In less than a year, the rat population increased 4 times. The authors also observed that, as the rat population quadrupled, the seabird population declined dramatically because the rats fed on their eggs. It was an ecological disaster that exploded in a very short period of time. Thus, the absence of cats in this world can be catastrophic, both for ecology and for us.