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Top 10 Largest Animals of All Time

Updated on July 1, 2019
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Ricky Rodson is an experienced cryptozoologist with several published books on the subjects of zoology, cryptozoology, and mythical beast.

Top 10 Largest Animals of All Time

Over the millions of years that this planet has existed, tens of thousands of animals have walked, lived, and died. Some of these creatures grew to be so extremely large in size, that many people doubt that ever existed at all. While everyone might be fascinated with gigantic animals, only those with a truly inquisitive mind wonder "What Were the Top 10 Largest Animals of All Time?" The goal of this article is to answer that question and more, by providing you with a well-researched list of the 10 largest animals to ever walk, swim, or fly across planet Earth.

Are These Really the 10 Largest Animals of All Time?

In order to spruce up this list with more animals than just whales and dinosaurs, we have chosen to include a variety of large species. And while this list why not contain technically the 10 largest animals to have ever lived, it does contain a far more interesting collection of large animals that we believe you will find a more interesting read. All of the animals on this list are guaranteed to impress you with their large size and enormous stature. And we can almost guarantee that the largest animal of all time will surprises you.

Image of a Portuguese Man o' War

Portuguese Man o' War Pictures
Portuguese Man o' War Pictures

Portuguese Man o' War

The Portuguese Man o' War is a type of jellyfish known for its long tentacles and extremely painful sting. While the state has only been fatal to humans on extremely rare occasions it still has earned the jellyfish the name 'floating terror'. While including the man-of-war on this list may be cheating because of its small frame, merely 6- 12 inches, we added it due to its extremely long tentacles. These painful tentacles have been known to extend downwards of up to 165 feet into the water.

Beautiful Man O' War Jellyfish Video

Titanoboa

The titanoboa is an enormously large snake that roamed the waters of northern Columbia approximately 58 to 60 million years ago. The snake was said to been able to grow up to 42 feet long and weigh nearly 1.12 tons. Due to the large size, this incredible snake was forced to spend most of his time in the water to prevent sluggish movement speeds. The titanoboa is the largest known snake to have ever existed.

Picture of a African Bush Elephant about to Charge

African Bush Elephant Pictures
African Bush Elephant Pictures

African Bush Elephant

The African bush elephant is the largest land animal alive on the earth today. This creature can stand nearly 14 feet tall. This large size means that the elephant needs to consume close to 50 gallons of water every day just to stay hydrated. An interesting fact about the bush elephant is that its tusk can grow nearly 11 feet long and can lift up to 400 pounds. This Elephant May not be a largest animal on this list but it is one of the most fearsome that you could face.

Picture of The Megalodon

Megalodon Pictures
Megalodon Pictures

Megalodon

The megalodon is an extremely large species of extinct shark that lived around 2.6 million years ago. This is by far one of the scariest creatures to make our list of the top 10 largest animals of all time. This creature was so large that its name actually means 'big tooth'. This large aquatic predator is one of the most powerful fish ever to have existed and would feed on whales, large seals, and giant turtles. During the Renaissance, the petrified teeth of the animal were discovered and believed to be the teeth of dragons. According to scientists, the actual size of the creature could have been anywhere from 79 to 82 feet long. The Megalodon can actually be seen in a movie that was released in 2018 called "The Megalodon".

Life-size Model of the Leedsichthys

Picture of a Leedsichthys
Picture of a Leedsichthys

Leedsichthys

The Leedsichthys, or more commonly called "Leeds' fish," is an extremely large ray-finned predator that lived and hunted in the middle of the Jurassic period. The remains of this monstrous fish were first discovered in 1889 by British collector named Alfred Leeds. Based off the massive weight of the Ocean Sunfish, the next largest extant bony fish, the Leeds Fish is assumed to also have had an extremely large weight being at least 3 times its size or nearly 40 feet long.

Image of a Argentinosaurus

Image of a Argentinosaurus
Image of a Argentinosaurus

Argentinosaurus

Paleontologists believe that during the late Cretaceous period a genus of titanosaur, Argentinosaurus, existed that could have weighed anywhere from 75 to 100 feet long and also weighed 75 to 100 tons. This size would make it the largest dinosaur ever to walk on land. Due to its extremely large size, this enormous beast could only move approximately 5 miles an hour and would leave a path of devastation behind it.

Argentinosaurus: The Largest Dinosaur Ever! - Video

Drawing of the Amphicoelias Fragillimus
Drawing of the Amphicoelias Fragillimus

Amphicoelias Fragillimus

The Amphicoelias Fragillimus is quite possibly the largest herbivore ever to have existed. Based on the descriptions of a single surviving fossil, scientists estimate that this giant story of pod could have grown to be nearly 190 long and weighed over 130 tons. While some historians maintain that the large size is merely a typographical error others believe the reports. While this creature may have had thin extremities, it was must have had a massive weigh due to its enormous size.

Picture of a Spinosaurus

Image of a Spinosaurus
Image of a Spinosaurus

Spinosaurus

The Spinosaurus is an extremely large dinosaur that lived in areas of northern Africa during the Cretaceous period. Originally discovered in 1912, the fossilized remains of the gargantuan creature were described by a German paleontologist named Ernst Stromer as being nearly 60 feet long and weighing upwards of 20 tons. The creature's skull was long and narrow like a crocodile and its distinctive sail-like spines were 5 feet long extensions of the animal's vertebrae. This large beast had a diet of both land and aquatic animals. A Spinosaurus appeared as the main antagonist in the 2001 movie Jurassic Park III.

Image of the Patagotitan Mayorum

Patagotitan Mayorum Picture
Patagotitan Mayorum Picture

Patagotitan Mayorum

The Patagotitan mayorum is an insanely big genus of titanosaurian sauropod known to have roamed the lands of Patagonia, Argentina. The most recent research conducted in 2017 theorize that this large dinosaur could have grown to be anywhere from 121 to 131 feet long and weighed over 80 tons. The fossils that have been discovered indicate that this creature lived nearly 95 and 100 million years ago during the late Cretaceous period.

Drawing of the Blue Whale

Blue Whale
Blue Whale

Blue Whale

Yes, that's right, despite all the dinosaurs and extinct creatures on this list, the blue whale is the largest living animal ever to have existed on the planet Earth. This marine mammal is known to grow upwards of 100 feet long and can weigh anywhere up to 190 tons. The main factor that separates this animal from the rest of the creatures on the list is that there are still anywhere from 10,000 to 25,000 blue whales swimming around the oceans today.

Picture of a living Manta Ray

Manta Ray Picture
Manta Ray Picture

Bonus Animal: The Manta Ray

Manta rays are extremely large, gentle giants that have been known to grow as large as 23 feet wide and have quite an impressive wingspan. These can be looking critters are known to inhabit warm temperature waters and eat only plankton like most other filter feeders. One of the strangest features of the manta ray, is that its face is located on its underbelly. It appears to be more alien then animal. Out of all the animals to make the list of the top 10 largest animals of all time, the manta ray is one of the goofiest looking.

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2018 Ricky Rodson

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