One of the largest animals to exist after dinosaurs went extinct was the Titanoboa.

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Blue whales weigh up to 300,000 pounds and are about 75 to 79 feet long.

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The Megalodon weighed over 100,000 pounds and was up to 50 feet long.

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The Pelagornis sandersi is considered the largest flying bird species and had a wingspan of about 20 to 24 ft (6.1 to 7.4 m).

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The Megalania Prisca is an extinct lizard that weighed 700-4,200 pounds and was 15 to 23 feet long.

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Epicyon was a large genus of canines estimated to have a full body length of 7.9 feet (2.4 meters) and a total body weight of 370 pounds.

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The Simbakubwa Kutokaafrika could have weighed anywhere from 620 to 3,330 pounds!

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Forest wolf spiders can measure up to 50 millimeters long from tip to tip.

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