---
title: "American Cockroach vs Common Pill Bug: Who Would Win?"
description: "Who would win, American Cockroach or Common Pill Bug? Common Pill Bug wins with a 57% chance in our 3-round battle simulation."
image: "https://animaltracks.wiki/icon-512.png"
---

# American Cockroach vs Common Pill Bug: Who Would Win?

Common Pill Bug wins this matchup, with a 57% chance of victory against 43% for American Cockroach in our 3-round simulation. Its biggest advantage is armor and toughness, 30 to 7 out of 100.

The simulation puts both animals on neutral ground. In the wild, terrain, the size of the individual animals and plain luck would all change the result.

## Verdict: Common Pill Bug
- **Win probability**: American Cockroach 43%, Common Pill Bug 57%
- **Decisive weapon**: Curls into a ball when squeezed or shaken

### Round 1: Opening Clash & Speed

Both fighters trade rapid exploratory blows, testing each other's reaction times in a high-voltage standoff.

### Round 2: Clash of Superpowers

Common Pill Bug detonates its biological specialty: Curls into a ball when squeezed or shaken. The sheer destructive payload overcomes American Cockroach's 7 armor rating.

### Round 3: Final Resolution

In the decisive final moments, Common Pill Bug exploits a critical tactical window. Overpowering American Cockroach with crushing precision to the tune of Oasis, it claims undisputed victory.

## Fighter 1: American Cockroach (*Periplaneta americana*)
- **Superpower**: Switches from six-legged to four-legged and two-legged running at up to 50 body lengths per second
- **Danger Level**: Low
- **Conservation Status**: Not Evaluated
- **Habitat**: Mainly basements, sewers, steam tunnels and drainage systems, worldwide
- **Musical Match**: Hella (Math Rock & Instrumental Virtuoso)
- **Full Dossier**: [Read American Cockroach Profile](https://animaltracks.wiki/animals/american-cockroach/)

## Fighter 2: Common Pill Bug (*Armadillidium vulgare*)
- **Superpower**: Curls into a ball when squeezed or shaken
- **Danger Level**: Low
- **Conservation Status**: Not Evaluated
- **Habitat**: Under stones and logs and in garden soil; native to the Mediterranean edge, now on nearly all landmasses
- **Musical Match**: Oasis (Britpop & 90s Madchester)
- **Full Dossier**: [Read Common Pill Bug Profile](https://animaltracks.wiki/animals/common-pill-bug/)

## Biological Matchup Context
When contrasting American Cockroach against Common Pill Bug, tactical victory depends on physiological engagement range, strike speed, armor density, and chemical or physical defense mechanisms:
- **American Cockroach**: A cockroach that switches to running on four legs, and on two, at up to 50 body lengths per second.
- **Common Pill Bug**: A land-living crustacean that rolls into a ball, and in which bacterial DNA has become a new sex chromosome.

Pick your own matchup in the interactive arena: [Battle Arena](https://animaltracks.wiki/compare/american-cockroach-vs-common-pill-bug/)

> The Battle Arena is an algorithmic thought experiment for education and entertainment. Never provoke, fight, or disturb animals in the wild.

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