We would all know about these "pets"???

We would all know about these "pets" ... Agree that, despite the obvious unappetizing topic, it is unlikely to leave anyone indifferent. You, of course, come to mind different stories. Maybe, you even remember the Russian folk sign to bring a black cockroach "for luck" to the hut just put up. And if in the village someone was extremely poor, then about this they said that "he even does not live with cockroaches." But, perhaps, these seven facts from cockroaches will be something new for you ...

1. The official and the cockroach share common roots! When the question arose about the etymology of the word "cockroach" itself, several popular versions were adopted. The most common of these is the origin of the Turkic word "tarcan", which means "dignitary".

In jest, it can be said that officials breed at least as fast as cockroaches (one female lays up to 320 eggs from each pairing), and they are just as difficult to catch (in a second the cockroach can change its direction 25 times at a very high speed of 4 km / h, which is comparable to the speed of movement of a person).

1. Most people know that cockroaches can live in space. But hardly many people know that this nasty insect feels great in ... an atomic reactor.

2. A cockroach can live 10 days without a head. In the end, he just dies of thirst, since he can not drink without the upper body, but breathe - please! The cockroach, after all, does not breathe easily, but the whole surface of the body. And the blood of him - white, by the way, color - does not need a cardiovascular system: it freely circulates directly over the internal cavities of the body. The very heart of this species is also absent - instead of it the insect has a cylinder with rhythmically contracting walls.

3. Cockroach can swim and is able to live without air for 40 minutes. Therefore, it is unlikely that a rapid descent into the canal can negatively affect his health.

4. In China, candied cockroaches are considered a delicacy, since in this being the protein is several times greater than in the chicken.

5. Cockroaches have a complex social organization, including individual identification of each insect for a specific smell, marking hunting grounds so that others do not have a fancy, joint supervision of young people, sharing food with members of the same colony. Moreover, cockroaches are fully capable of learning conditioned reflexes no worse than dogs.