A phantom mare includes a housing having inlet and outlet ends with a bore therebetween. A bladder surrounds the bore. Upon injection of a warmed fluid into the housing, the fluid is captured between the bladder and bore surface to distend and warm the bladder. Upon stallion penetration in the outlet end the discharged semen is directed to a collection container at the outlet end. A valve assembly regulates a user discharge of the fluid from the housing so that the distended bladder returns to a non-distended position to preclude irritation on the stallion upon withdrawal. The removal of heat of the discharged fluid from the housing reduces the possibility of damage to the deposited semen.