Strongest animal bites in the world: 6 jaw-force record-holders ranked

Bite force is one of the most studied metrics in comparative biomechanics, and one of the most misreported. Pop-science lists frequently mix measured values with estimates, compare different measurement methods, or confuse bite force with jaw pressure per unit area. This ranking uses measured Newton values from peer-reviewed biomechanics studies where available, with estimates flagged.

One caveat before the list: raw force figures depend on where in the jaw the measurement is taken. A crocodile's rear teeth generate more force than the front. The figures below represent peak measured or estimated biting force across the full jaw.

1. Saltwater Crocodile, approximately 16,000 N

The saltwater crocodile holds the highest reliably measured bite force of any living animal: around 16,000 Newtons in large adults. That is roughly the force of 1,600 kg pressing on a small area between the rear teeth. The closing muscles are extraordinarily powerful and well-documented in biomechanics literature (Erickson et al., 2012). The jaw-opening muscles, by contrast, are weak: a strong adult human can hold a crocodile's jaws shut with their hands.

The evolutionary logic is sound. A crocodile kills by seizing prey at the waterline and dragging it under. It does not need to chew. It needs to hold, and 16,000 N ensures it holds anything short of an elephant.

2. Nile Crocodile, approximately 9,000 N

Africa's largest reptile produces estimated peak bite forces around 9,000 N in large individuals, lower than the saltwater crocodile but still far above any mammal. The Nile crocodile's teeth are robust and the skull is built for repeated torsional stress: the "death roll" that dismembers large prey works by twisting the body while the jaws hold absolutely still. See the full profile at our Nile crocodile guide.

3. Common Hippopotamus, approximately 8,100 N

Among mammals, the hippopotamus has the strongest measured bite. Peak force estimates reach 8,100 N, more than double any big cat. The canines can reach 50 cm and the incisors are broad and sharp. Hippos use this jaw primarily in territorial fights between males, opening a near-180-degree gape as a threat display before striking.

The bite is not used for feeding: hippos are grazers and use their wide, flat lips and blunt teeth to crop grass. The jaw force evolved entirely for combat.

4. Jaguar, approximately 1,350 N (canine) with extreme pressure per area

The jaguar's measured bite force is around 1,350 N at the canines, lower than many assume, but the figure misses the point. The jaguar's canines are proportionally the thickest and most robust of any big cat. The force applied through that small contact area generates extreme pressure per square centimetre. The jaguar kills not by suffocation (unlike lions, leopards and tigers) but by a single crushing bite through the skull, piercing the braincase directly. It can crack a river turtle's shell and punch through a caiman's armour. See the full jaguar guide.

5. Lion, approximately 1,000–1,300 N

Lions bite with approximately 1,000–1,300 N of force, similar to other large Panthera cats but applied differently. The lion kills by clamping the throat and cutting off airflow or blood supply, holding for minutes until the prey loses consciousness. The carnassial teeth that shear meat are blade-like rather than crushing, a design optimised for slicing through flesh rather than cracking bone. The skull and jaw musculature are built for a sustained hold, not a single high-force strike. See our strongest animals ranking for context on how bite force relates to overall body strength.

6. American Black Bear, approximately 750–850 N

The American black bear produces estimated bite forces of 750–850 N, making it one of the stronger biters among North American land mammals. Bear molars are broad and ridged for crushing, adapted for a highly varied omnivorous diet that includes hard nuts, bones and tough plant material. The jaw is unusually flexible compared with other carnivores: the hinge allows both the shearing action of a predator and the grinding action of a herbivore, a design compromise that slightly limits maximum bite force but gives the bear remarkable dietary range. Brown bears bite harder still, with estimates reaching 1,400 N in large individuals.