[4] It may easily be observed how a cow
in heat exerts an exciting influence on other cows, impelling them to
attempt to play the bull's part. Lacassagne has also noted among young
fowls and puppies, etc., that, before ever having had relations with the
opposite sex, and while in complete liberty, they make hesitating attempts
at intercourse with their own sex.[5] This, indeed, together with similar
perversions, may often be observed, especially in puppies, who afterward
become perfectly normal. Among white rats, which are very sexual animals,
Steinach found that, when deprived of females, the males practise
homosexuality, though only with males with whom they have long associated;
the weaker rats play the passive part. But when a female is introduced
they immediately turn to her; although they are occasionally altogether
indifferent to sex, they never actually prefer their own sex.[6]
With regard to the playing of the female part by the weaker rats it is
interesting to observe that Fere found among insects that the passive part
in homosexual relations is favored by fatigue; among cockchafers it was
the male just separated from the female who would take the passive part
(on the rare occasions when homosexual relations occurred) with a fresh
male.
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