The scienter action is a category within
tort law in some
common law jurisdictions that deals with the damage done by an animal directly to a human. Tort law is designed to offer retribution for civil wrongs. Scienter within tort law had a long history in
English law until it was abolished by the
Animals Act 1971. An action in the
common law jurisdictions in which it has not been extinguished by statute is in addition to the torts of
negligence and
nuisance or more bespoke torts like
cattle trespass. If an animal is known to behave in a certain way and is expressed on a person causing injury, an action can be taken in this tort, which also is not available in
New South Wales, the
Australian Capital Territory,
South Australia, or New Zealand. In those jurisdictions, the actions involving animals need to be in nuisance or negligence. To be successful, the
plaintiff needs to
take action against the
person in control of the animal. The plaintiff can file a
complaint to initiate a
lawsuit to recover damages. It is
strict liability, requiring no more than proof of injury, the animal's having a problematic trait, and the knowledge of the person in control about the trait in the animal. Strict liability means that there is no need to argue fault in the form of
wilful intent or negligence on the part of the animal or its controller. The only
defence is if it can be proved the plaintiff voluntarily assumed the risk of injury by their actions, or if the plaintiff was the cause of the injury. It is common to distinguish between
harmless animals and
wild animals, as no scienter is needed for wild animals as long as they are native to their respective regions. Animals are classed as wild or harmless on the basis of species or kind, not on the basis of being a tame individual. An elephant is considered wild regardless of its use. The scienter action is referred to in
Rylands v. Fletcher in that one who keeps a wild thing "must keep it at his peril" to make reference to part of Justice
Colin Blackburn's comment. ==General use==