It turned out not to keep cats as mice

Cats like to hunt mice? Maybe, but that's not entirely true.

Cats have to catch mice - this is a thousand-life concept that we all have to recognize. So logically, a city has a lot of cats.

But that's what you think.The truth is that no matter how much cats are, the mouse is still running , and everything has its reasons. According to a recent study, cats turn out to be very human, always like to work easily. And rats are becoming increasingly difficult to hunt prey.

Specifically, this is a cat study done in New York City. The idea comes from the fact that the storytellers realize that even though they are famous for their hunting skills, they become instinctive, but the cats in this city rarely hunt mice.

The truth is that no matter how much cats are, the mouse is still running.

Using mouse-based chips at Brooklyn's recycling site, combined with field camera systems, US and Australian experts have tried to see how far the mouse-killing effect of the cat army here is.

During the period of December 27, 2017 - May 28, 2018, they obtained 306 videos with cats and / or rats in one location. In particular, cats appear 259 times, but only 20 times there are signs of mouse lurking. In particular, there are exactly 3 times cats actually chase mice, and 2 times actually hunt successfully.

According to experts, the reason is because of the mice. On isolated islands, cats are capable of hunting rats very effectively because the mice are quite small, weighing only about 150g. Even in Australia, mice are small and pretty, not much bigger.

But mice in big cities like New York or Chicago are another story. These are rats, usually twice as big as the mice above - ie an average weight of up to 300g.

Cats often do not like to hunt prey too large.

Big and smarter rats will become extremely difficult, but cats don't like that. In both cases of rat hunting cats in the study, the ill-fated prey is small.

"Cats like unresponsive prey" - quoted in the research report. Huge traps of rats will bring more grueling battles than mice, birds, lizards, or even cockroaches.

In addition, the experts found that when the cats appeared, there were very few mice coming out. They are smart enough to learn how to avoid cats.

When the cats appear, there will be very few mice coming out.

"Although mice do not usually appear, it is because they avoid cats and do not disappear. Our research shows that when there are cats, mice also appear less".

"This also means that rats in the city are highly adaptable, and using rats to hunt rats is hard to get the effect."

The study is published in the journal Frontiers in Ecology and Evolution.