TRESPASS, in law, a physical inter ference with the person or property of another. However innocent the act, if it be voluntary, a legal wrong is done. Thus, if pursued by a wild beast you deliberately take refuge in another man's house, you commit a trespass; but if you rush there in mere blind fear you do not. Again, if you drive in so careless a manner as to hurt any one, though unintentionally, this is a tres pass. If animals or, indeed, any chat tels are on a man's land doing damage, they may be seized and impounded till compensation be made. This remedy is called distress damage feasant. It is similar to distress at common law—e. g., there is no power of sale. If a dog worry cattle or sheep, the owner is liable. For merly it was necessary to prove scienter e., knowledge by the master of the animal's vicious disposition. Soienter must still be proved in other cases, and generally when animals, not savage by nature, do hurt—a legal doctrine quaintly parodied in the vulgar saying that the dog is entitled to his first bite. Even in complete absence of real injury an action for trespass will lie, for, says Lord Denman, those rights are an ex tension of that protection which the law throws round the person. A verdict of a farthing damages is, however, the fre quent and appropriate compensation for injury without damage (injuria sine damno).
As will be seen, there are various kinds of trespass: (1) trespass to goods, which consist in damaging them phys ically, as asportation—i. e., carrying them away; (2) trepass to the person, which is either battery, assault, or false imprisonment. Battery is an active at tack on any one. Assault is an at tempted battery; both are criminal of fenses as well as civil wrongs. False imprisonment is usually classed among the latter. It consists in depriving a man of his liberty without lawful excuse. Compelling any one to submit by the ex hibition of superior force, though no ac tual violence be used, is a wrong of this nature. If a constable intervene, the question is, did he do so of his own ini tiative, or at the prompting of a third party? In the second case only, even if the arrest be illegal, can the third party be held liable for the false imprisonment? Trespass to the person may be justified on the ground that a man was acting in self-defense, that it was necessary to stop a breach of the peace, to apprehend a felon, or to assist police officers in the execution of their duty, and that the person arrested was dangerous to himself and others.
As regards trespass to land, since a plaintiff must succeed by the strength of his own, not by the weakness of his adversary's case, bare possession is a good title as against a wrong doer; so the occupier may turn out an intruder, using, on his refusal to depart peace ably, as much force as is necessary. If the possessor be forcibly turned out, he may forcibly re-enter, even though outer doors be broken open to effect the purpose. But this must be done imme diately, otherwise the owner, though en titled to possession, will, if he use vio lence, render himself criminally liable under the statutes of forcible entry. In making a distraint for rent or in levy ing an execution, but not executing crim inal legal process, it is a trespass to break open the outer door. Though the general rule is that an entry on an other land is a trespass, yet in certain cases of necessity an entry is excused— e. g., to abate a nuisance or to pre vent the spread of fire. A customary right of recreation or right of way will excuse what would otherwise be a tres pass. Cut glass or spikes on a wall are allowable as a defense against intruders; but not man traps or spring guns (except inside a dwelling house), at least since 1827. Even before that a trespasser could recover for damages so done to him, unless he had notice of the existence of the engines in question. The mere act of trespassing on another's land is not a criminal offense, but by statute it is when in pursuit of game, on rail ways, on places where explosives are stored or animals afflicted with conta gious disease are confined. Besides the remedies for trespass—viz., forcible ex pulsion and an action for damages—an injunction may be granted, even for a bare trespass, since the Judicature Act of 1873. The law of the United States is based on the English law.
The term trespass, in Scotch law, is borrowed from that of England. It is restricted to trespass to land.