1. EYE: Cockroaches have "compound eyes" which allow them to see simultaneously in almost all directions around its body. Each cockroach eye is made up of 2,000 individual lenses. In contrast, human eyes have only one lens. Weird fact: cockroaches cannot see in red light, but see in green light very well.
2. LEG: Hairs on the legs of a cockroach provide an extra sense of touch.
3. ANTENNAE: Sniff, sniff. Antennae, or feelers, provide roaches with a sense of smell. Male cockroaches have special sense receptors that allow them to smell the odor produced by a female when she is looking for a mate.
4. CERCI: Cerci are the two little hairs on the rear end of a cockroach. They act like a motion detector. When something tries to sneak up on a cockroach, the cerci detects the slightest breeze or movement, and alerts the cockroach to run in the opposite direction.
5. MOUTH: A cockroach mouth can smell as well as taste. (Imagine eating with your nose!) It moves from side to side, not up and down the way human mouths do.
6. SALIVARY GLANDS: Yup, cockroaches know how to and actually do spit thanks to their salivary glands. They can't blow bubbles, though.
7. REPRODUCTION: Cockroaches don't date. To attract mates, the female cockroach produces an odor (a pheromone) that excites male cockroaches. Males produce a package of sperm that may keep female cockroaches pregnant for most of their lives. Depending on the species, females can produce egg cases with anywhere from 16 to 64 embryos (young cockroaches).
8. SKELETON: The skeleton of a cockroach is on the outside of its body. The skeleton is shed when the cockroach outgrows it.
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