| Locomotion |
Male mouse ambulates, displacing himself in space |
During and after interaction |
| Digging |
Male mouse visibly moves bedding with forelegs |
During and after interaction |
| USVs |
Ultrasonic syllables visible on spectrograph |
During and after interaction |
| Rearing |
Male mouse lifts forelegs from ground, either into the air or against the cage wall |
During and after interaction |
| Male investigation of female ano-genital region |
The male’s nose is in close proximity to the female’s rear |
During interaction |
| Female investigation of male ano-genital region |
The female’s nose is in close proximity to the male’s rear |
During interaction |
| Male and female nose-to-nose investigation |
The male and female’s noses are in close proximity to each other, usually as aresult of male advances |
During interaction |
| Female rejection |
The female kicks, jerks, or rapidly bolts when in close proximity to the male |
During interaction |
| Mounting |
The male places his forelegs on the female’s back, oriented from the rear, whilemaking pelvic thrusts |
During interaction |
