Roach mouths work sideways. Try it sometime. Roaches use their feelers as noses. The world's largest roach is six inches long with a one-foot wingspan. The world's largest roach lives in South America.
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.