Headless cockroaches are capable of living for weeks. They die from starvation. Cockroaches have their own Neighborhoods. Cockroaches get lonely and even become ill if they are left alone for too long. There is a newly found cockroach species in the U.S. that can survive freezing temperatures. A group of cockroaches is called an intrusion. Cockroaches raised in space become quicker, stronger, faster, and tougher than cockroaches on Earth. Cockroaches shed their skin. Cockroaches appeared 120 million years before dinosaurs. Cockroaches are among the world's fartiest species. Cockroaches can make group decisions. When 50 cockroaches are presented with 3 shelters that can only house 40, they'll split evenly into two groups and leave one shelter empty. Catnip is a natural cockroach repellent. Cockroaches can run on two legs, and that they can reach speeds of almost 5 feet per second. Cockroaches are served fried in China, Thailand and other Asian countries. Cockroaches have a much higher radiation resistance than vertebrates, with the lethal dose perhaps 6 to 15 times that for humans. Cockroaches have distinct personalities, a study found. In 2015, engineering students in China worked out how to control live cockroaches using a brain-to-brain interface technique. Englishman Ken Edwards ate 36 Madagascan cockroaches in one minute in 2001. Only about 30 cockroach species out of 4,600 are associated with human habitats.