German cockroach

Warm, humid human structures, especially kitchens, bathrooms, wall voids, and areas near food or water.

An opportunistic omnivore feeding on crumbs, grease, starches, pet food, waste, and occasionally household materials.

Primarily nocturnal, fast-moving, and strongly attracted to warmth, moisture, and shelter. Females carry an egg case until shortly before hatching, enabling rapid population growth.

Can contaminate food and surfaces and spread allergens associated with asthma and dermatitis. It has little meaningful household benefit, though it serves as prey for predators in natural ecosystems.