TOKYO—A new study offers a hint why American cockroaches are so hard to get rid of: Females can breed for years and multiply their numbers dozens of times alone, without ever mating with a male.

When a male cockroach wants to mate with a female cockroach very much, he will scoot his butt toward her, open his wings and offer her a homemade meal — sugars and fats squished out of his tergal ...

When you think of eggs, you likely picture chicken eggs, but think of all the animals that lay eggs like those chickens. Cockroaches are egg layers but not the eggs you want to stumble upon.

Prepare to hear your worst nightmare: cockroaches can multiply on their own for years without meeting a member of the opposite sex. For a few types of cockroaches, such as the American cockroach, or ...

Also identified as the water bug, the American cockroach is one of the most common pests infesting homes in the United States. Reddish-brown in color, this cockroach is large and fast, making it quite ...

Female cockroaches are egg-cellent at sisterhood. A new study reveals that groups of the buggy little ladies can reproduce for years without a male, reports a Japanese study. The research, published ...