A giant alligator resting on the shorelines of Florida.

The giant alligator is the largest "true" crocodilian species on the planet, growing up to about 50 feet long and weigh about 12 tons, much larger than its ancestors during the Age of Dinosaurs (Mesozoic era), which were only around 35 feet in length and weighed about 9 tons. The giant alligator is the survivor of the mass extinction that killed of most non-avian dinosaurs to extinction, with the exceptions of troodonts, koreaceratops, charonosaurus, and few sauropods. Due to lack of competition from abelisaurids, carnosaurs, or tyrannosaurs, the giant alligators flourished with abundance of prey items, including the more recently evolved species such as uintatheres and other large mammals. In modern times, the largest animals that giant alligators prey on are elephants (including African elephants, Asian elephants, mastodons, mammoths, etc) and fork-horned laaras. They are most closely related to American alligators. Giant alligators, however, have one thing that American alligators don't have, the ability to tolerate saltwater. In the shorelines, giant alligators are successful predators that can steal kills from orcas, great white sharks, and among other predators, and can even prey on them. They have a similar form of mating as their smaller American alligator cousins and make a similar sound, although slightly louder and deeper in tone due to being much larger animals. The females lay eggs around 2-4 months after mating and the eggs hatch around 3-4 months after being laid, longer than the amount of time American alligators lay eggs and the time that baby American alligators hatch. Giant alligators have slightly smaller brains than American alligators due to less competition and abundance of food, so they don't need to be as smart as their American alligator cousins.

Giant Alligator
  • Domain: Eukarya
  • Kingdom: Animalia
  • Phylum: Chordata
  • Subphylum: Vertebrata
  • Class: Reptilia
  • Order: Crocodilia
  • Superfamily: Alligatoroidea
  • Genus: Deinosuchus
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