1. 1. Only three out of eleven sexually inexperienced adult male cats in which the glans penis was desensitized by resection of the dorsal nerve of the penis developed sexual behaviour. These males showed the typical behavioural abnormalities reported previously for sexually experienced, adult males. The abnormalities seen were: (a) genital disorientation while mounting the female causing loss of intromission; (b) a cyclical low period in sexual arousal in the fall of each year; and (c) a non-seasonal decline in sexual behaviour during the third and fourth years of testing. 2. 2. Five out of eight prepuberally nerve-cut males developed sexual behaviour and had similar behavioural abnormalities, except that the seasonal cycles did not appear until the third year. Intromission occurred occasionally during the first 1 1 2 years of testing, but ceased completely thereafter. © 1969.
