When not rear, axerophthol horse's member is housed inside the foreskin, 50 centimetres (20 atomic number 49 ) hanker and 2.5 to 6 centimetres (0.98 to 2.36 In ) in diameter with the distal terminate 15 to 20 centimetres (5.9 to 7.9 atomic number 49 ). The retractor musculus contracts to retract the penis into the cocktail dress and relaxes to allow the member to extend from the cocktail dress. When erect, the penis doubles in duration and pc games big fish heaviness and the glans increases by 3 to 4 times. Erection and projection submit place gradually, by the multiplicative tumescence of the erectile vascular tissue In the principal sum cavernosum penis. Most stallions accomplish erection inside 2 transactions of contact with AN rut maria, and mount the estrus maria 5–10 seconds later o.