Among birds, some have the feet divided into toes, while others, again, are broad and flatfooted—in others, which partake of the intermediate nature of both, the toes are divided, with a wide space between them. All birds, however, have four toes—three in front, and one on the heel; this last, however, is wanting in some that have long legs. The iynx[346] is the only bird that has two toes on each side of the leg. This bird also protrudes a long tongue similar to that of the serpent, and it can turn the neck quite round and look backwards; it has great talons, too, like those of the jackdaw. Some of the heavier birds have spurs also upon the legs; but none of those have them which have crooked talons as well. The long-footed birds, as they fly, extend the legs towards the tail, while those that have short legs hold them contracted close to the middle of the body. Those authors who deny that there is any bird without feet, assert that those even which are called apodes,[347] are not without them, as also the oce, and the drepanis,[348] which last is a bird but very rarely seen. Serpents, too, have been seen with feet like those of the goose. CHAP. 108. (48.)—THE FEET OF ANIMALS, FROM THOSE HAVING TWO FEET TO THOSE WITH A HUNDRED.—DWARFS. Among insects, those which have hard eyes have the fore-feet long, in order that from time to time they may rub the eyes with their feet, as we frequently see done by flies. The insects which have long hind-feet are able to leap, the locust, for instance. All these insects have six feet: and some of the spiders have two very long feet in addition. They have, all of them, three joints. We have already[349] stated that marine insects have eight feet, such as the polypus, the sæpia, the cuttle-fish, and the crab, animals which move their arms in a contrary direction to their feet, which last they move around as well as obliquely: they are the only animals the feet of which have a rounded form. Other insects have two feet to regulate their movements; in the crab, and in that only, these duties are performed by four. The land animals which exceed this number of feet, as most of the worms,[350] never have fewer than twelve feet, and some, indeed, as many as a hundred. The number of feet is never uneven in any animal. Among the solid-hoofed animals, the legs are of their proper length from the moment of their birth, after which they may with more propriety be said to extend themselves than to increase in growth: hence it is, that in infancy they are able to scratch their ears with the hind feet, a thing which, when they grow older, they are not able to do, because their increase of growth affects only the superficies of the body. It is for the same reason also, that they are only able to graze at first by bending the knees, until such time as the neck has attained its proper length. (49.) There are dwarfs to be found among all animals, and among birds even. CHAP. 109.—THE SEXUAL PARTS.—HERMAPHRODITES.