Australia’s largest American alligator has been saved from a potentially fatal stomach blockage thanks to the bravery of zookeepers.

Ivan, the 3.6m-long dominant male at the Australian Reptile Park on the Central Coast of NSW, required urgent medical intervention after staff discovered he had a serious health issue.

WATCH THE VIDEO ABOVE: Enormous alligator Ivan saved by zookeepers.

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The park said he was “critically unwell and fading fast” when keepers made the “dangerous decision to intervene”.

Ten staff members banded together to safely capture the massive reptile.

Brave zookeepers save Ivan, Australia's largest American alligator from fatal blockage. Credit: 7NEWS

Ivan is Australia’s largest alligator. Credit: 7NEWS

Once secured, Ivan was carefully sedated to allow veterinarians to perform a delicate procedure.

They were able to successfully flush his stomach and remove the dangerous blockage.

Ivan is making an incredible recovery following the medical intervention, reclaiming his title as the dominant alpha in the Gator Lagoon.