---
title: "American alligator vs bull shark — size, speed and bite force"
description: "American alligator and bull shark compared on mass, length, speed, bite force and lifespan — every measure side by side, with why the numbers cannot settle an encoun"
url: https://atoneplace.net/animal-vs/american-alligator-vs-bull-shark/
site: "At One Place"
---

# American alligator vs bull shark

**American alligator vs bull shark: American alligator leads on 3 of 3 measures**

Measured comparison — not a prediction

A broad-snouted crocodilian of the US Southeast, recovered from near-extinction to over a million animals. The only large shark that tolerates fresh water, found far up rivers including the Mississippi and Amazon. On the measurements below, American alligator leads on more of them — but they do not all point the same way, and the ones that disagree are the interesting part.

## The measurements

|  | American alligator | bull shark |
| --- | --- | --- |
| Mass | 70–500 kg | 90–316 kg |
| Length | 2.6–4.6 m | 2.1–3.5 m |
| Bite force | 1,000–2,980 psi | — |
| Lifespan | 35–70 yr | 12–32 yr |

## Where each one leads

- Mass: American alligator is 1.8× heavier.
- Length: American alligator is 1.4× longer.
- Lifespan: American alligator is 3.1× a longer life.

## What this does and does not tell you

These are measured averages with real ranges behind them, and every figure links to its own page. What they cannot do is settle an encounter. Outcomes between animals turn on circumstance — who initiates, whether either is hungry, defending young, injured or cornered, and what the terrain favours. Size and bite force are not decisive on their own, and most of these pairs never meet in the wild in any case, because their ranges do not overlap.

> Every figure here is an average with a substantial spread. Individual animals vary enormously — a large individual of the smaller species routinely exceeds a small individual of the larger one.

## Common questions

### Is a American alligator bigger than a bull shark?

American alligator is heavier — 70–500 kg against 90–316 kg.

### Who would win, a American alligator or a bull shark?

That is not something measurements can settle. The comparison above shows which animal leads on each measure, but an actual encounter depends on circumstance, motivation, health and terrain — and most pairs like this never meet in the wild.

## Related pages

- [How much does a American alligator weigh?](https://atoneplace.net/weight/american-alligator/)
- [How much does a bull shark weigh?](https://atoneplace.net/weight/bull-shark/)
- [African elephant vs bull shark](https://atoneplace.net/animal-vs/african-elephant-vs-bull-shark/)
- [African elephant vs American alligator](https://atoneplace.net/animal-vs/african-elephant-vs-american-alligator/)
- [blue whale vs bull shark](https://atoneplace.net/animal-vs/blue-whale-vs-bull-shark/)
- [bottlenose dolphin vs bull shark](https://atoneplace.net/animal-vs/bottlenose-dolphin-vs-bull-shark/)
- [bull shark vs lion](https://atoneplace.net/animal-vs/bull-shark-vs-lion/)
- [bull shark vs tiger](https://atoneplace.net/animal-vs/bull-shark-vs-tiger/)
- [bull shark vs leopard](https://atoneplace.net/animal-vs/bull-shark-vs-leopard/)
- [bull shark vs jaguar](https://atoneplace.net/animal-vs/bull-shark-vs-jaguar/)
- [bull shark vs cheetah](https://atoneplace.net/animal-vs/bull-shark-vs-cheetah/)
- [bull shark vs cougar](https://atoneplace.net/animal-vs/bull-shark-vs-cougar/)
- [bull shark vs snow leopard](https://atoneplace.net/animal-vs/bull-shark-vs-snow-leopard/)
- [bull shark vs domestic cat](https://atoneplace.net/animal-vs/bull-shark-vs-domestic-cat/)

## Sources

- Smithsonian National Museum of Natural History — Smithsonian Institution (https://naturalhistory.si.edu/)
- National Oceanic and Atmospheric Administration — NOAA (https://www.noaa.gov/) [Public domain (US Government)]
- Typical range compiled from manufacturer specifications — At One Place (/about/)