Tiger snakes are a venomous snake found in southern regions of Australia, including its coastal islands and Tasmania. Tiger snakes are found in coastal environments, wetlands, and creeks where they often form territories. They are also found in suburban areas, even in the newer suburbs. Areas with an abundance of prey, such as frogs, can support large populations.

These snakes feed on all types of creatures, they happily feed on frogs, fish, small birds and other small mammals. They also eat other reptiles such as lizards. Tiger snakes habitually raid birds nests and have been found climbing trees to a height of 8 m. Adult snakes are also known to use constriction on larger prey as well.

These snakes are highly variable in their colour, often banded like those on a tiger, and forms in their regional occurrences. Tolerant of low temperatures, the snake may be active on warmer nights. Tiger snakes are a large group of distinct populations, which may be isolated or overlapping, with extreme variance in size and colour. Individuals also show seasonal variation in colour. The total length may be up to 2.1 meters (7 ft). The patterning is darker bands, strongly contrasting or indistinct, which are pale to very dark in colour. Coloration is composed of olive, yellow, orange-brown, or jet-black, the underside of the snake is lighter and yellow or orange.

Tiger snakes are not generally aggressive, and will flee whenever possible. When threatened they will flatten the body and raise the head above the ground in a classic pre-strike stance. It is known for its multiple bluff strikes and loud hisses. Tiger snakes possess a potent neurotoxin (Notexin), coagulants, haemolysins and myotoxins, and rank amongst the deadliest snakes in the world. Symptoms of a bite include localized pain in their foot and neck region, tingling, numbness, and sweating, followed by a fairly rapid onset of breathing difficulties and paralysis. While antivenom is effective, mortality rates approach 45% if not treated.