Which Indonesian monitor lizard has venom glands in its lower jaw?

The Indonesian monitor lizard with venom glands in its lower jaw is the Komodo dragon.

The Komodo dragon (Varanus komodoensis), also called the Komodo monitor, is the largest living lizard. It is native to several Indonesian islands, including Komodo, Rinca and Flores. MRI scans and anatomical studies have identified paired venom glands in its lower jaw.

Its venom contains compounds associated with reduced blood pressure, impaired blood clotting and muscle effects. The dragon’s serrated teeth also cause deep wounds, so the bite’s danger comes from both mechanical injury and oral toxins. Older accounts often blamed deadly bites mainly on bacteria in the animal’s mouth, but later research challenged that explanation.

A common mix-up is assuming that all large lizards are harmless or that the Nile monitor is the uniquely venomous choice. Monitor lizards as a group possess venom systems, but the Komodo dragon is the famous Indonesian example.