Quick answer
Cockroaches are flattened, fast-moving insects known for their toughness and ability to thrive in many environments. Most of the thousands of species live in the wild, but a few have become common household pests. They are omnivores that eat almost anything and can survive for weeks without food.
Key takeaway
Cockroaches are flattened, fast-moving insects known for their toughness and ability to thrive in many environments. Most of the thousands of species live in the wild, but a few have become common household pests. They are omnivores that eat almost anything and can survive for weeks without food.
Overview
Cockroaches are flattened, fast-moving insects known for their toughness and ability to thrive in many environments. Most of the thousands of species live in the wild, but a few have become common household pests. They are omnivores that eat almost anything and can survive for weeks without food.
Biology
Cockroach (Blattodea) is classified as Insect with conservation status Least Concern. Typical weight about 0.0008 kg; lifespan around Several months to about a year.
Ecology
Diet: Omnivore (almost anything organic). Habitat: Forests, burrows, and human buildings worldwide. Movement and social systems reflect those pressures.
People and this species
Learn before you travel or keep related pets. Wild individuals are not toys; captive care needs species-specific husbandry.
Further reading
See the full Cockroach profile for FAQs, taxonomy, and related guides on this site.
Built for survival
Cockroaches have flat, flexible bodies that let them squeeze into tiny cracks, and they can move very quickly to escape danger. They are highly adaptable, tolerating a wide range of conditions and going for weeks without food. These traits have made them successful for hundreds of millions of years.
Diet and behavior
As omnivores, cockroaches eat almost anything organic, including plants, crumbs, grease, paper, and decaying matter. Most species are active at night and prefer dark, warm, humid hiding places. They are social to a degree and often gather in groups, guided by chemical scent trails.
Pests and ecology
Only a small number of cockroach species are household pests, but those that are can contaminate food and trigger allergies in some people. The great majority of cockroach species live outdoors in forests and other habitats, where they help recycle decaying plant material and serve as food for other animals.
Life cycle
Cockroaches develop through incomplete metamorphosis, hatching from egg cases as small nymphs that look like wingless adults. They molt several times as they grow. Many females carry or hide a protective egg case called an ootheca, which holds multiple eggs.
Research notes
Figures for cockroachs (Blattodea) come from field studies, museum records, and conservation assessments that do not always agree on exact averages. Prefer ranges over single-point claims, and check whether a source describes wild, captive, or mixed populations.
Practical takeaways
If you encounter cockroachs in the wild, prioritise distance and local guidance. If you care for related domestic or captive animals, match diet and housing to species needs rather than generic pet advice. Share accurate status information (Least Concern) when discussing conservation.
Sources
FAQs
Cockroach: Key Facts & Natural History?
Cockroaches are flattened, fast-moving insects known for their toughness and ability to thrive in many environments. Most of the thousands of species live in the wild, but a few have become common household pests. They are omnivores that eat almost anything and can survive for weeks without food.
What is the scientific name of the cockroach?
Blattodea
What do cockroachs eat?
Omnivore (almost anything organic)
Where do cockroachs live?
Forests, burrows, and human buildings worldwide
Are cockroachs endangered?
Listed here as Least Concern. Check IUCN and national lists for the latest assessment.