(1)The female has a small opening called the vulva situated below the anus. The vulva leads to the vagina which is the actual birth canal and passage for the penis during copulation. The vagina leads to the cervix which is the opening into the uterus. The uterus consists of a body and two uterine horns. During mating the male deposits sperm directly into the uterus of the female. In The oviduct carries the egg from the ovary to the uterus and is also the site of fertilization of the egg by sperm. alpacas most pregnancies occur in the left horn. Young females usually reach sexual maturity at about 12-15 months of age and when they are 45-50kg. This gives the female adequate time to mature and reduces the risk of problems during parturition. Potentially adult female alpacas can remain productive up to 13-15 years of age.
(2)The male has two testicles in a non- pendulous scrotum situated below the anus. The function of the scrotum is to maintain the testicles, which are the source of sperm, at a slightly lower temperature than the rest of the body. The prepuce is the sac holding the penis. This normally points backwards during urination, but when the male is sexually aroused the prepuce points forward and the penis is extruded for mating. The tip of the penis has a slightly clockwise curvature. In young males the penis is adherent to the prepuce and they are usually unable to extrude the penis sufficiently for mating until they are about 2.5-3 years old. Eruption of fighting teeth appears to correlate with approximate time of sexual maturity.
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(2)The male has two testicles in a non- pendulous scrotum situated below the anus. The function of the scrotum is to maintain the testicles, which are the source of sperm, at a slightly lower temperature than the rest of the body. The prepuce is the sac holding the penis. This normally points backwards during urination, but when the male is sexually aroused the prepuce points forward and the penis is extruded for mating. The tip of the penis has a slightly clockwise curvature. In young males the penis is adherent to the prepuce and they are usually unable to extrude the penis sufficiently for mating until they are about 2.5-3 years old. Eruption of fighting teeth appears to correlate with approximate time of sexual maturity.