Cockroaches are insects of the order Blattodea, which also includes termites. About 30 cockroach species out of 4,600 are associated with human habitats. About four species are well known as pests. -wikipedia
I've been cleaning our house recently and I've noticed this scary cockcroache. At first, I was about to kill it but suddenly I consider taking a picture of it.
They really are scary at first glance but once you stare at them, you will see how interesting there body is.
But even though they are calm and small, still we must be afraid of them because they are popularly depicted as dirty pests.