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

# American alligator vs grizzly bear

**American alligator vs grizzly bear: American alligator leads on 3 of 4 measures**

Measured comparison — not a prediction

A broad-snouted crocodilian of the US Southeast, recovered from near-extinction to over a million animals. The inland North American brown bear, smaller than coastal populations because it eats less salmon. 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 | grizzly bear |
| --- | --- | --- |
| Mass | 70–500 kg | 130–360 kg |
| Length | 2.6–4.6 m | 1.7–2.4 m |
| Height | — | 0.9–1.1 m |
| Top speed | — | 56 km/h |
| Bite force | 1,000–2,980 psi | 975 psi |
| Lifespan | 35–70 yr | 20–35 yr |

## Where each one leads

- Mass: grizzly bear is 1.2× heavier.
- Length: American alligator is 1.7× longer.
- Bite force: American alligator is 2.2× a stronger bite.
- Lifespan: American alligator is 2.0× 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 grizzly bear?

grizzly bear is heavier — 130–360 kg against 70–500 kg.

### Who would win, a American alligator or a grizzly bear?

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 grizzly bear weigh?](https://atoneplace.net/weight/grizzly-bear/)
- [cheetah vs grizzly bear](https://atoneplace.net/animal-vs/cheetah-vs-grizzly-bear/)
- [cougar vs grizzly bear](https://atoneplace.net/animal-vs/cougar-vs-grizzly-bear/)
- [domestic cat vs grizzly bear](https://atoneplace.net/animal-vs/domestic-cat-vs-grizzly-bear/)
- [grizzly bear vs lion](https://atoneplace.net/animal-vs/grizzly-bear-vs-lion/)
- [grizzly bear vs tiger](https://atoneplace.net/animal-vs/grizzly-bear-vs-tiger/)
- [grizzly bear vs leopard](https://atoneplace.net/animal-vs/grizzly-bear-vs-leopard/)
- [grizzly bear vs jaguar](https://atoneplace.net/animal-vs/grizzly-bear-vs-jaguar/)
- [grizzly bear vs snow leopard](https://atoneplace.net/animal-vs/grizzly-bear-vs-snow-leopard/)
- [grizzly bear vs polar bear](https://atoneplace.net/animal-vs/grizzly-bear-vs-polar-bear/)
- [grizzly bear vs red fox](https://atoneplace.net/animal-vs/grizzly-bear-vs-red-fox/)
- [grizzly bear vs spotted hyena](https://atoneplace.net/animal-vs/grizzly-bear-vs-spotted-hyena/)
- [grizzly bear vs honey badger](https://atoneplace.net/animal-vs/grizzly-bear-vs-honey-badger/)

## Sources

- Smithsonian National Museum of Natural History — Smithsonian Institution (https://naturalhistory.si.edu/)