---
title: "American alligator vs hippopotamus — size, speed and bite forc"
description: "American alligator and hippopotamus 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-hippopotamus/
site: "At One Place"
---

# American alligator vs hippopotamus

**American alligator vs hippopotamus: American alligator leads on 2 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. A semi-aquatic grazer, the third-heaviest land mammal and among the most dangerous to people. 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 | hippopotamus |
| --- | --- | --- |
| Mass | 70–500 kg | 1,300–3,200 kg |
| Length | 2.6–4.6 m | 3.3–5 m |
| Height | — | 1.3–1.65 m |
| Top speed | — | 25–30 km/h |
| Bite force | 1,000–2,980 psi | 1,800 psi |
| Lifespan | 35–70 yr | 40–55 yr |

## Where each one leads

- Mass: hippopotamus is 6.5× heavier.
- Length: near enough identical.
- Bite force: American alligator is 1.2× a stronger bite.
- Lifespan: American alligator is 1.1× 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 hippopotamus?

hippopotamus is heavier — 1,300–3,200 kg against 70–500 kg.

### Who would win, a American alligator or a hippopotamus?

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 hippopotamus weigh?](https://atoneplace.net/weight/hippopotamus/)
- [cheetah vs hippopotamus](https://atoneplace.net/animal-vs/cheetah-vs-hippopotamus/)
- [cougar vs hippopotamus](https://atoneplace.net/animal-vs/cougar-vs-hippopotamus/)
- [domestic cat vs hippopotamus](https://atoneplace.net/animal-vs/domestic-cat-vs-hippopotamus/)
- [grizzly bear vs hippopotamus](https://atoneplace.net/animal-vs/grizzly-bear-vs-hippopotamus/)
- [American black bear vs hippopotamus](https://atoneplace.net/animal-vs/american-black-bear-vs-hippopotamus/)
- [giant panda vs hippopotamus](https://atoneplace.net/animal-vs/giant-panda-vs-hippopotamus/)
- [gray wolf vs hippopotamus](https://atoneplace.net/animal-vs/gray-wolf-vs-hippopotamus/)
- [coyote vs hippopotamus](https://atoneplace.net/animal-vs/coyote-vs-hippopotamus/)
- [African elephant vs hippopotamus](https://atoneplace.net/animal-vs/african-elephant-vs-hippopotamus/)
- [African elephant vs American alligator](https://atoneplace.net/animal-vs/african-elephant-vs-american-alligator/)
- [Asian elephant vs hippopotamus](https://atoneplace.net/animal-vs/asian-elephant-vs-hippopotamus/)
- [black rhinoceros vs hippopotamus](https://atoneplace.net/animal-vs/black-rhinoceros-vs-hippopotamus/)

## Sources

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