Cockroaches can be identified by their flattened, oval-shaped body, long antennae, and six legs that are adapted for fast movement. They are commonly found in warm and humid environments. Their hard exoskeleton protects their body and allows them to squeeze through tight spaces. Cockroaches are also known for their ability to survive in harsh conditions and their adaptability to different environments. They feed on a variety of food sources, including garbage, decaying matter, and even glue.