Reproduction:

 Females mature in their second year of life and give birth to one cria (baby llama) every other year. Mating occurs in August and September, with a gestation period of 342-368 days.

A female llama should begin to ovulate 24 to 26 hours after breeding. The egg takes about two hours to travel partially down the oviduct where it becomes fertilized by the sperm and becomes an embryo. After fertilization, the embryo continues to move toward the uterus (this will take three to six days on average).

After reaching the uterus, the embryo will move freely for about 30 days before attaching completely to the uterine wall (about 60 to 90 days into pregnancy).

Initially, progesterone stimulates the preparation of uterine lining for the arrival of the embryo. It also decreases the smooth muscle contractions which could possibly expel the new embryo when it contacts the uterus. Without this progesterone, the stimulation of the embryo hitting the uterine wall would cause it to be expelled from the body by initiating contractions. At 48 hours prior to birth, progesterone production practically ceases, which will lead to the expulsion of the fetus.

Leia, Yoda's female "roommate"