In your house, a young cockroach needs a crack about 0.5mm wide to hide or crawl into your house. An adult males could squeeze into a space of 1.6mm while pregnant females need more hiding space up to 4.5mm.
Cockroaches can run up to 3km/hr (0.8 m/s).
American and German cockroaches are believed to have originated from North Africa.
It is believed that the world's largest roach found in South America is six inches long with a one-foot wingspan.
Roaches By the Numbers 6 - Number of legs on a cockroach 18 - Number of knees on most cockroaches 40 - Number of minutes cockroaches can hold their breath 75 - Percentage of time that cockroaches spend just resting 5,000 - Number of species of cockroaches worldwide 280 million+ - Years ago that cockroaches are thought to have originated (during the Carboniferous era)