11. But man partakes of both qualities. Those which have a common employment are called social, but that is not the case with all gregarious animals. Man, and the bee, the wasp, and the ant, and the stork belong to this class. Some of these obey a leader, others are anarchical; the stork and the bee are of the former class, the ant and many others belong to the latter. Some animals, both in the gregarious and solitary class, are limited to one locality, others are migratory. There are also carnivorous animals, herbivorous, omnivorous, and others which eat peculiar food, as the bee and the spider; the former eats only honey and a few other sweet things, while spiders prey upon flies and there are other animals which feed entirely on fish. Some animals hunt for their food, and some make a store, which others do not. There are also animals which make habitations for themselves, and others which do not. The mole, the mouse, the ant, and the bee, make habitations, but many kinds both of insects and quadrupeds make no dwelling. 12. With regard to situation, some are troglodite, as lizards and serpents, others, as the horse and dog, live upon the surface of the earth. Some kinds of animals burrow in the ground, others do not; some animals are nocturnal, as the owl and the bat, others use the hours of daylight. There are tame animals and wild animals. Man and the mule are always tame, the leopard and the wolf are invariably wild, and others, as the elephant, are easily tamed. We may, however, view them in another way, for all the genera that have been tamed are found wild also, as horses, oxen, swine, sheep, goats, and dogs. 13. Some animals utter a loud cry, some are silent, and others have a voice, which in some cases may be expressed by a word, in others it cannot. There are also noisy animals and silent animals, musical and unmusical kinds, but they are mostly noisy about the breeding season. Some, as the dove, frequent fields, others, as the hoopoe, live on the mountains; some attach themselves to man, as the pigeon. Some are lascivious, as the partridge and domestic fowl, and others are chaste, as the raven, which rarely cohabits. 14. Again, there are classes of animals furnished with weapons of offence, others with weapons of defence; in the former I include those which are capable of inflicting an injury, or of defending themselves when they are attacked; in the latter those which are provided with some natural protection against injury.