Which snake is the world's most venomous by median lethal dose in mice?

The inland taipan is commonly identified as the world's most venomous snake by venom toxicity measured by median lethal dose in mice.

Its venom is exceptionally potent, containing neurotoxins, myotoxins, and other components that can affect nerves, muscles, blood clotting, and the heart. Toxicity rankings refer to laboratory measurements, not the overall danger posed to people, which also depends on behavior, habitat, bite frequency, and access to treatment.

The inland taipan lives in the clay soils and floodplain areas of central eastern Australia. It is also called the fierce snake, but it is generally secretive and avoids human contact. Its diet consists mainly of small mammals, especially introduced house mice.

The species changes color seasonally, becoming darker in cooler months and lighter in warmer months. This helps regulate heat by changing how much sunlight its body absorbs.