Do Cockroaches Favor One Side over the Other?

Cockroaches, like humans, tend to be right-handed. Cockroaches aren't the only animals to display "handedness," though. Horses have been shown to be largely right-hoof dominant, and parrots, lobsters, owls and monkeys all show some kind of asymmetrical dominance.

More facts about cockroaches:

• Young cockroaches can squeeze through a hole the thickness of a dime. Older ones need up to a quarter's thickness of space to squeeze through.


• Female cockroaches mate only once in their lifetime, but after that, they're pregnant for the rest of their lives.


• Cockroaches that have just shed their skin are white with black eyes. It takes them up to eight hours to regain their normal shell coloring.

Frequently Asked Questions

Do cockroaches have a preferred side when they move?

Yes, research has shown that cockroaches, like many animals, exhibit a preference for one side. A study published in the journal "Biology Letters" found that when navigating through a maze, cockroaches tend to favor their right side. This lateral bias can influence their escape routes when avoiding threats.

Is the side preference in cockroaches significant for their survival?

Side preference in cockroaches can be significant for survival as it affects their ability to quickly escape predators. According to entomologists, a predictable side preference could potentially be exploited by predators, but the agility and speed of cockroaches often compensate for this, enhancing their chances of survival.

Can the side preference of cockroaches be changed or influenced?

The side preference in cockroaches appears to be an innate behavior, but it can be influenced by external factors. Studies have shown that training and environmental changes can alter their preferred direction, suggesting a degree of plasticity in their behavior. However, the underlying mechanisms are not fully understood.

Does the side preference affect how cockroaches interact with their environment?

Side preference in cockroaches does affect their interaction with the environment. It influences how they explore, search for food, and avoid obstacles. This behavior can lead to more efficient foraging and evasion tactics, which are crucial for their survival in various habitats.

Are there any other insects or animals that show a similar side preference?

Many animals exhibit lateralization, showing a preference for one side. For instance, studies have documented handedness in primates and lateralized behavior in birds. This suggests that side preference is a common trait in the animal kingdom, potentially offering various adaptive advantages.

How does understanding cockroach side preference benefit pest control methods?

Understanding cockroach side preference can inform pest control strategies by predicting their escape routes and potentially improving the placement of traps and baits. Knowledge of their behavior patterns allows for more targeted and effective control measures, reducing the reliance on chemical treatments and minimizing their environmental impact.