GENERATION OF ANIMALS, IV. v.-vi. 



same reason, too, men that are hairy are more prone 

 to sexual intercourse and have more semen than men 

 that are smooth. As for the hare, often some of its 

 fetations are imperfect ; others of its offspring, 

 however, it brings to birth in a perfected state. 



Among the \'ivipara, some bring their young to VI 

 birth in a perfect, some in an imperfect, state. To f^^^^j^g 

 the former class belong the solid-hoofed and the at birth, 

 cloven-hoofed animals, to the latter most of the 

 fissipede animals. The reason for this is that the solid- 

 hoofed animals produce one at a birth, the cloven- 

 hoofed animals produce either one or two, in general,** 

 and it is an easy matter to bring the nourishing of 

 a few to completion. Those fissipede animals which 

 produce their offspring in an imperfect state, all pro- 

 duce numerous offspring, and on that account while 

 the fetations are quite young they are able to nourish 

 them, but once they have advanced in growth and 

 have attained some size their bodies are unable to 

 bring the nourishing of them to completion, and so 

 discharge them just as the larva-producing animals 

 do,*" for indeed their young, like the larvae, are practi- 

 cally unarticulated when born, e.g., those of the fox, 

 the bear, the lion, and similarly with some of the 

 others ; moreover, practically all of them are blind, 

 e.g., the ones just mentioned, and in addition those of 

 the dog, the wolf, and the jackal. The only animal 

 which produces numerous offspring that are perfectly 

 formed is the pig ; thus it is the only one which has a 

 footing in both classes : (a) it produces numerous off- 

 spring, as the fissipede animals do, but (6) it is a species 

 which is cloven-hoofed and solid-hoofed — for soUd- 

 hoofed pigs exist, as we know.'' It produces numer- 

 ous offspring because the nourishment available for 



455 



