The Nile crocodile has the strongest measured bite force on Earth at 3,700 PSI. The hippo weighs 1,500 kg and kills more people than any other large animal in Africa. They share the same rivers. They occasionally fight. And in the footage that exists, the hippo wins almost every time -- sometimes by biting the crocodile in half.
Crocodylus niloticus
Hippopotamus amphibius
The crocodile has the stronger bite and better armor. The hippo has four times the mass, larger weapons, and zero fear. In direct confrontation, the mass and gape of the hippo overwhelm the crocodile's advantages.
| Category | Crocodile | Hippo | Advantage |
|---|---|---|---|
| Mass | 225 -- 750 kg | 1,500 -- 3,200 kg | Hippo (4x) |
| Bite force | 3,700 PSI | 1,800 PSI | Crocodile |
| Gape | 100 degrees | 180 degrees | Hippo |
| Weapon size | 5 cm teeth | 50 cm tusks | Hippo |
| Armor | Osteoderms all over | 6 cm hide on back only | Crocodile |
| Land speed | 18 km/h | 30 km/h | Hippo |
| Water speed | 35 km/h | 8 km/h | Crocodile |
| Aggression | Ambush calculation | Attacks without provocation | Hippo |
| Group behavior | Solitary | Pods of 10 -- 30 | Hippo |
| Parental defense | Strong (mother only) | Entire pod defends calves | Hippo |
A 3,700 PSI bite is the strongest ever measured on a living animal. But the muscles that open a crocodile's jaws are almost laughably weak -- a human adult can hold them shut with bare hands. More importantly, the crocodile's killing technique is the death roll: clamp onto prey and spin to tear it apart or drown it. Against a 3-ton hippo the roll doesn't work. The hippo is too heavy to move.
The crocodile's bite also can't penetrate hippo hide on the back, which is 6 cm of tough connective tissue evolved specifically for mutual combat between hippo bulls. A crocodile trying to bite down on a hippo's back is biting into armor it cannot break.
Hippos are not herbivores in the sense that matters for combat. They're territorial, aggressive, and they attack crocodiles on sight in the vicinity of calves. Their canine tusks grow 50 cm long -- longer than a crocodile's skull -- and their jaws gape to nearly 180 degrees. A hippo bite closes with 1,800 PSI of force concentrated through tusks that puncture, not just crush.
Documented hippo-vs-crocodile encounters almost always end the same way: the hippo grabs the crocodile by the middle, lifts it out of the water, and crushes or bites through it. Footage from Kruger National Park, Luangwa River, and the Okavango all show the pattern.
These species overlap across thousands of kilometers of African rivers. Confrontations are filmed almost every tourist season on the Serengeti, the Luangwa, and the Okavango Delta.
A 3-meter Nile crocodile was filmed being grabbed by a bull hippo, lifted out of the water, and crushed between the hippo's jaws. The crocodile's armor was irrelevant -- the hippo's tusks punctured straight through.
Hippo wonCrocodiles routinely prey on hippo calves that stray from the pod. When adult hippos detect this, they charge in formation. A pod of 10+ hippos has been documented driving off and killing crocodiles that attacked calves.
Hippos won (pod)The Luangwa has the densest concentrations of both species in Africa. Crocodiles and hippos share identical basking zones but avoid direct contact. When they do collide, hippos dominate. Crocodiles are frequently seen with tusk-puncture scars.
Hippo dominatesA 5-meter Nile crocodile can occasionally take a small or sick hippo calf. This is the only documented direction in which the crocodile wins -- and it only happens when the calf is isolated from the pod.
Crocodile (rare cases)The hippo wins this matchup almost every time. It has four times the mass, larger weapons, equal speed on land, better group dynamics, and an aggression level that means it doesn't hesitate. The crocodile's bite and armor, while formidable, aren't sufficient to overcome the size differential.
The only scenarios the crocodile wins are when it catches an unprotected juvenile hippo in deep water. Against an adult bull or a pod, it has no play and it knows it. This is why crocodiles give way when hippos arrive at a drinking spot -- they're reading the matchup correctly.
Short version: hippo wins decisively. The crocodile has the bigger bite, but the hippo has the bigger everything else.
