The possibility of sexual excitement between women and animals involves a certain degree of sexual excitability in animals from contact with women. Darwin stated that there could be no doubt that various quadrumanous animals could distinguish women from men--in the first place probably by smell and secondarily by sight--and be thus liable to sexual excitement. He quotes the opinions on this point of Youatt, Brehm, Sir Andrew Smith and Cuvier (_Descent of Man_, second edition, p. 8). Moll quotes the opinion of an experienced observer to the same effect (_Untersuchungen über die Libido Sexualis_, Bd. i, p. 429). Hufeland reported the case of a little girl of three who was playing, seated on a stool, with a dog placed between her thighs and locked against her. Seemingly excited by this contact the animal attempted a sort of copulation, causing the genital parts of the child to become inflamed. Bloch (_Op. cit._, p. 280, _et seq._) discusses the same point; he does not consider that animals will of their own motion sexually cohabit with women, but that they may be easily trained to it. There can be no doubt that dogs at all events are sometimes sexually excited by the presence of women, perhaps especially during menstruation, and many women are able to bear testimony to the embarrassing attentions they have sometimes received from strange dogs. There can be no difficulty in believing that, so far as _cunnilinctus_ is concerned dogs would require no training. In a case recorded by Moll (_Konträre Sexualempfindung_, third edition, p. 560) a lady states that this was done to her when a child, as also to other children, by dogs who, she said, showed signs of sexual excitement. In this case there was also sexual excitement thus produced in the child, and after puberty mutual _cunnilinctus_ was practiced with girl friends. Guttceit (_Dreissig Jahre Praxis_, Theil I, p. 310) remarks that some Russian officers who were in the Turkish campaign of 1828 told him that from fear of veneral infection in Wallachia they refrained from women and often used female asses which appeared to show signs of sexual pleasure.