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Feral buffalo (Bubalus bubalis)

Introduced buffalo have established feral populations in northern Australia, where they thrive in tropical wetlands and floodplains. Their grazing and trampling can substantially alter habitats, vegetation and water movement, so coordinated management is important in affected areas.

Key facts

Type: Pest animal, mammal.

Native to: South and Southeast Asia.

Established in: NT.

Other names: Asian water buffalo, Swamp buffalo, Asian buffalo, Domestic buffalo.

Best time to act: In northern Australia, surveys and control can be more effective in the late dry season, when buffalo are more concentrated around permanent water.

Identification

  • A very large, heavy-bodied animal with a dark grey, brown or black coat and little body hair.
  • It has a broad head, splayed hooves and long, widely spreading horns that curve backwards in swamp buffalo.
  • The tail is long and ends in a tuft of hair.
  • Buffalo often graze or wallow in water and mud, especially in hot conditions.
  • They may be seen singly or in herds, with females and young commonly forming groups.
  • Look-alike: Feral cattle can also be large and dark, but buffalo have distinctive broad, backward-curving horns and splayed hooves.
  • Look-alike: Banteng are another large bovine found in parts of northern Australia; coat pattern and horn shape can help distinguish them.

Where it lives

In Australia, feral buffalo are most associated with tropical wetlands, floodplains and riverbanks, using nearby dry land and woodland for resting and shelter.

Why it matters

  • Grazing and trampling can reduce ground cover, damage vegetation and increase erosion, particularly on floodplains.
  • Buffalo activity can alter wetland hydrology and contribute to saltwater intrusion into freshwater areas.
  • Habitat changes can harm native wildlife, including by damaging nesting habitat and trampling turtle nests.
  • Feral animals can compete with livestock for grazing and may carry diseases that affect cattle.

How it spreads

  • Feral herds have developed from domestic buffalo that escaped or were abandoned, and spread through natural reproduction and movement.
  • Buffalo can travel across large areas over time, particularly through suitable tropical floodplain and wetland habitats.
  • Prevent further spread by keeping domestic buffalo securely contained and avoiding unauthorised movement or release.

Control methods

  • Buffalo are dangerous, so do not approach or attempt to handle them; plan control with experienced, appropriately authorised operators.
  • Use coordinated, humane removal or culling methods approved for the location, which may include ground-based or aerial operations where permitted.
  • Monitor treated areas and follow up to find survivors, newly arrived animals and regrowth of the herd.
  • Record sightings and signs, and contact the relevant state or territory biosecurity agency for local reporting and control guidance.

Site hygiene and welfare

  • Clean mud and plant material from vehicles, machinery, footwear and equipment before leaving wetlands or moving between sites.
  • Do not transport live buffalo or contaminated equipment between properties or sites without meeting applicable biosecurity requirements.
  • Use methods set out in the national model codes of practice and standard operating procedures for the species.
  • Coordinate control with neighbours and the local government biosecurity plan, as isolated effort is quickly undone by reinvasion.

Classification by state

  • Australia (national): No national listing. Managed under state and territory law.
  • Queensland: Not prohibited or restricted. Not listed as prohibited or restricted matter in Queensland. Everyone must also take all reasonable and practical steps to minimise its risks (the general biosecurity obligation).
  • New South Wales: General biosecurity duty. Not prohibited matter in NSW. The general biosecurity duty applies: anyone dealing with it must prevent, eliminate or minimise the risk it poses.
  • Victoria: Regulated pest animal. It is a regulated pest animal in Victoria. Keeping it is allowed, but releasing it into the wild is prohibited.
  • South Australia: Declared animal. Declared animals have legal restrictions, which can cover keeping, moving, selling and releasing them, and landowners may be required to control them.
  • Western Australia: Declared pest (C1), prohibited. C1 Exclusion: to be kept out of WA, or out of the parts of WA where it is not established. Report any sighting to DPIRD. It must not be brought into WA (prohibited organism).
  • Tasmania: Not a declared pest. Not a declared pest or prohibited matter in Tasmania. Importing animals is still controlled by Biosecurity Tasmania.
  • Northern Territory: Not a declared pest. Not on an NT declared or prohibited list. Check with the NT Government before keeping, moving or releasing it.
  • Australian Capital Territory: Not declared. Not declared under the Biosecurity Act 2023 (ACT). A general biosecurity duty still applies.

Legal obligations

Every state and territory places a duty on landholders and people working on land to prevent the spread of invasive species, such as the general biosecurity obligation in Queensland and the general biosecurity duty in New South Wales. Declarations and control requirements differ between states and local government areas, so check the current official list before work starts.

  • Northern Territory: Territory Parks and Wildlife Conservation Act 1976 (NT), administered by NT Department of Lands, Planning and Environment

Sources