Table 2.

Mating behaviors of male rats.

Behavioral category	Endpoint measured	Description
Male-initiated behaviors	Mount/intromission frequency	Frequency of mounts/intromissions displayed (per minute)
	Mount/intromission/ejaculation latency	Latency to first mount/intromission/ejaculation (seconds)
Female-initiated behaviors	Hops/darts elicited	Frequency of hops & darts displayed by the female (per minute)
	Lordosis quotient (LQ) elicited	$\mathrm{No}.\text{\hspace{0.17em} of \hspace{0.17em} lordoses \hspace{0.17em} displayed \hspace{0.17em} by \hspace{0.17em} the \hspace{0.17em} female}/[\text{no}.\text{\hspace{0.17em} of \hspace{0.17em} mounts}+\text{intromissions \hspace{0.17em} from \hspace{0.17em} the \hspace{0.17em} male}]$
	Lateral kicks elicited	Frequency of lateral kicks by the female to the face of the male (per minute)