Some roaches are tiny and live in ant nests. Tropical cockroaches are often brightly colored green, yellow, red. If you were to collect one of every species of cockroach found in the world, you'd need a lot of jars to put them in. There are some 5,000 species of cockroaches worldwide. Most species of cockroaches live in the tropics.
Cockroaches have six hairy legs.
The tiny hairs found on each leg give them their sense of touch. Tinkerbell would be jealous. Cockroach kidneys look like a bunch of writhing snakes. It doesn't sound like much fun, but some female cockroaches mate once and are pregnant for the rest of their lives. Roaches live all over the world, including the North and South Poles.