The wild boar, properly so called, is neither a solitary nor a gregarious animal. For the first two or three years, the whole herd follows the sow, and all unite in defence against any enemies, calling upon each other with loud cries in case of emergency, and forming in regular line of battle, the weakest occupying the rear. When arrived at maturity, the animals wander alone, as if in perfect consciousness of their strength, and appear as if they neither sought nor avoided any living creature. They are reputed to live about thirty years; as they grow old, the hair becomes gray, and the tusks begin to show symptoms of decay. Old boars rarely associate with a herd, but seem to keep apart from the rest, and from each other. The female produces but one litter in the year, much smaller in number than those of the domestic pig; she carries her young sixteen or twenty weeks, and generally is only seen with the male during the rutting season. She suckles her young for several months, and continues to protect them for some time afterward; if attacked at that time, she will defend herself and them with exceeding courage and fierceness. Many sows will often be found herding together, each followed by her litter of young; and in such parties they are exceedingly formidable to man and beast. Neither they nor the boar, however, seem desirous of attacking any thing; and only when roused by aggression, or disturbed in their retreat, do they turn upon their enemies and manifest the mighty strength with which Nature has endowed them. When attacked by dogs, the wild boar at first sullenly retreats, turning upon them from time to time and menacing them with his tusks; but gradually his anger rises, and at length he stands at bay, fights furiously for his life, and tears and rends his persecutors. He has even been observed to single out the most tormenting of them, and rush savagely upon him. Hunting this animal has been a favorite sport, in almost all countries in which it has been found, from the earliest ages. [Illustration: THE WILD BOAR AT BAY.] Wild boars lingered in the forests of England and Scotland for several centuries after the Norman conquest, and many tracts of land in those countries derived their name from this circumstance; while instances of valor in their destruction are recorded in the heraldic devices of many of their noble families. The precise period at which the animal became exterminated there cannot be precisely ascertained. They had, however, evidently been long extinct in the time of Charles I., since he endeavored to re-introduce them, and was at considerable expense to procure a wild boar and his mate from Germany. They still exist in Upper Austria, on the Syrian Alps, in many parts of Hungary, and in the forests of Poland, Spain, Russia, and Sweden; and the inhabitants of those countries hunt them with hounds, or attack them with fire-arms, or with the proper boar-spear.