Most of us have seen cockroaches at least once in our lives. These tenacious insects willingly settle in our homes, but getting rid of such a neighborhood is not so easy. Rapidly breeding cockroaches can be a real disaster in a single apartment, and the only really working way to deal with them is to keep the house clean. However, this all applies only to "domestic" cockroaches, and a huge variety of species live in their nature.
At the moment, there are more than 4, 600 different species of cockroaches in the world.
The closest relatives of cockroaches from a biological point of view are termites.
The fossilized remains of the first cockroaches indicate that these creatures lived half a billion years ago. Along with crocodiles, they are one of the most ancient inhabitants of the Earth, practically unchanged over the course of countless years.
Some cockroach species can fly.
The world's largest cockroach is the Australian rhinoceros cockroach. He lives up to ten years, and reaches 8-9 centimeters in length.
Madagascar cockroaches are popular pets for insect lovers. When angry, they hiss amusingly.
This kind of gambling sport, cockroach racing, has been known since the 19th century.
There is a myth that cockroaches can survive even in the event of a nuclear war. However, this is only a myth. However, cockroaches are indeed about 13 times less sensitive to radiation than humans.
Since about the beginning of the 21st century, cockroaches in human dwellings have become less and less, at least in Russia. The reason for this is still not clear.
Cockroaches release gases about every quarter of an hour.
A cockroach turned over on its back is not able to turn over itself.
In an average urban high-rise building, there are from one thousand to three hundred thousand cockroaches.
Ordinary "city" cockroaches can live without food for up to a month, and without water - a week.
A headless cockroach can live for several more weeks.
Cockroaches breathe with all the cells of the body, since they have no lungs, like other insects.