Not just any cock-roach, but the exotic Madagascar hissing cockroaches (pictured right), which (I'm sure you're keen to know)
- fall into two distinct groups when it comes to sexual behaviour. They are either horny or have a low libido. Horny males are more aggressive and put more effort into the two basic moves involved in roach courtship: hissing and genital thrusting. In fact, horny roaches love sex so much that they will hiss and thrust at pretty much any other roach that moves, male or female.