The Animal with the Largest Teeth on Earth

Animal with the Largest Teeth on Earth

Teeth come in many shapes and sizes across the animal kingdom, adapted for specific diets and functions. From tiny shrew teeth to massive elephant tusks, teeth provide great insight into how an animal survives.

Of all animals to ever inhabit Earth, one prehistoric marine predator had teeth that dwarfed all others – the mighty megalodon shark. With jaws that could span over 7 feet wide, megalodon had the largest teeth ever seen.

What Was Megalodon?

Megalodon (Carcharocles megalodon) was an ancient shark species that lived around 23 to 3.6 million years ago during the Early Miocene to the end of the Pliocene. It is considered to be one of the largest and most powerful predators to have ever existed. Based on fossil evidence, mature megalodon individuals could reach up to 60 feet in length, three times longer than the largest great white sharks today .

Megalodon belonged to the lamnidae family of mackerel sharks, which includes the great white shark. It evolved from smaller mako shark ancestors roughly 30 million years ago and was an apex predator of its time. Its name means “giant tooth” in Greek – an apt description of its most formidable assets.

Megalodon teeth vs white shark teeth

Megalodon’s Distinctive Teeth

The teeth of megalodon are one of its most unique and identifiable characteristics in the fossil record. They are not only the largest teeth of any known shark species, but also any vertebrate to ever live.

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Megalodon teeth can measure over 7 inches diagonally and are triangular in shape. Their surfaces are thickly enameled with serrated edges for cutting through flesh and bone . Fossil teeth show considerable wear and tear, evidence they were used for grasping and consuming large marine mammals.

Researchers estimate megalodon had around 276 teeth in its jaws at one time, arranged in five rows. With several hundred teeth stocked in backup rows, when one tooth would fall out, another would take its place, like a shark conveyor belt. This allowed megalodon to have fresh sharp teeth to continue hunting large prey.

Jaw Size and Bite Force

Megalodon’s teeth were attached to a massive jaw spanning over 7 feet wide when fully opened. By analyzing fossils and comparing them to the proportions of great white sharks, scientists calculate megalodon likely had a bite force between 108,514 to 182,201 newtons.

To put this in perspective, a large adult male lion has a bite force of around 4,450 newtons. Megalodon could crush a car with ease between its jaws full of dental armament. Its bite was arguably the most formidable ever seen from an ocean predator.

Megalodon teeth

Diet and Hunting

The massive teeth and jaws of megalodon allowed it to consume a wide variety of large marine mammals. Analysis of bite marks on fossils show definitively they preyed on contemporary baleen whales, feeding on their blubber and flesh.

Whale bones have been found with deep gashes matching megalodon teeth. They likely targeted vulnerable calves and juveniles, but also went after fully grown whales measuring over 30 feet long. In addition to whales, megalodon preyed on giant sea turtles, seals, dolphins, and even smaller shark species.

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Megalodon hunting strategies likely mirrored modern great white sharks. Their coloration was probably a counter-shaded gray on top and white on the bottom to camouflage when viewed from above or below. Like great whites, megalodon was likely an ambush predator, using fast bursts of speed to catch prey by surprise. Calculations estimate it could reach over 20 miles per hour in short bursts.

The shear size and strength of the megalodon allowed it to consume marine mammals its own size and even larger. It served as the ultimate apex predator of its time, keeping food chain dynamics in balance.

Megalodon’s Eventual Extinction

For millions of years, megalodons have been an integral part of ocean ecosystems globally. Approximately 3.6 million years ago their populations began to experience a significant decline during a time of climate shifts and falling sea levels. Cooling environments likely decreased suitable habitat and nursery areas. The loss of shallow coastal zones also disrupted access to preferred prey items for the massive sharks.

Megalodon eventually went extinct roughly 2.6 million years ago. There are several theories as to why they disappeared after reigning for over 20 million years as apex predators.

In addition to climate and environmental changes, competition from other apex predators like great white sharks and killer whales impacted megalodon populations. Their huge size requirements also made them more vulnerable when preferred prey became scarce.


Megalodon was one of the most formidable hunters to ever roam the oceans. Their teeth provide a glimpse back through time into the days when sharks were Giants. The megalodon ruled over food chains for millions of years before meeting their end.

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Humans are fortunate that Megalodon is now long gone, or ocean swimming would come with a whole other level of risk! Their massive teeth are a reminder of nature’s ability to produce perfect predators at staggering scales.