Cockroaches Breed in _________.

Cockroaches:

1. They are either brown or black colored animals.
2. They belong to the phylum arthropoda.
3. They are dioecious organisms.
4. They are nocturnal omnivores.
5. They are serious pests and are also vectors for various diseases.

Breeding:

For breeding, they prefer a warm and dark area with high moisture.

Final answer: Therefore, cockroaches breed in manholes.