Some animal species are regarded as pests in New Zealand because, when feral or roaming outdoors, they threaten the health of native ecosystems or primary production sector.
Where valued in other situations for hunting, production or as pets, management is required to minimise their pest impacts.
There are now more exotic plants growing wild in New Zealand than native plants. Many of them are considered weeds because they cause serious harm to our environment, health risks to people or a loss to agricultural industries. Many threaten parks and reserves, and others are invading our productive land.