Llama Pregnancy Calculator

How to use the Llama Pregnancy Calculator#

1. Enter the breeding date. Use the date of mating, or of insemination.
2. Check the length. Leave the average, or enter your vet’s figure for the breed.
3. Read your dates. You get the expected date, the likely window and your llama’s progress.

How long is a llama pregnant?#

The average is about 350 days, or eleven and a half months, and a normal window runs from about 335 to 360 days. Crias are often born in the morning and in daylight hours.

Getting ready for the cria#

Llamas are induced ovulators, so a breeding date is usually a good starting point. A vet can confirm pregnancy by ultrasound or a hormone test. Make sure the dam has shade, clean water and good hay, and keep her away from stress.

Birth is usually quick and uneventful. The cria should stand and nurse within a few hours. Call a vet if labour goes on without progress, or if the cria is weak and not nursing.

Why the date is a window#

Llamas ovulate in response to mating, so the breeding date is a reliable starting point, but the window is still long: 335 to 360 days, with an average of 350. A cria that arrives anywhere in that stretch is on time, and most are born in daylight hours. This calculator is a planning tool and doesn’t replace veterinary advice.

A worked example#

A female llama is bred on Thu 10 June 2027. At the 350-day average, the cria is due on Thu 25 May 2028. The window runs from Wed 10 May 2028 to Sun 4 June 2028. Halfway falls on Thu 2 December 2027, and the final stretch begins on Mon 3 April 2028, which is day 298.

Gestation in llamas and alpacas is a little over eleven months, and some normal pregnancies run past 360 days. A single cria is the rule. Twins are very rare and rarely both survive.

Spitting off, and other ways to confirm#

Camelids ovulate in response to mating, much like cats, so the breeding date is a reliable anchor. A common farm test is the spit-off: from about a week after mating, a pregnant female will refuse the male, sometimes spitting at him, while a female that did not conceive will sit down for him again. It is not conclusive, and many farms confirm with a blood progesterone test about three weeks after breeding, or with ultrasound.

Keep a note of every breeding date with the male’s name. A herd record like that tells you what your own animals average, which in a small herd is more useful than a general figure.

Birth day and the first hours#

Llamas usually give birth during the daytime, often in the morning or early afternoon, which is thought to be an advantage in the wild as the cria can dry and warm up in daylight. Delivery is typically fast once the cria’s front feet and nose appear. A cria usually weighs somewhere around 9 to 14 kilograms (20 to 30 pounds).

The cria should be on its feet within a couple of hours and nursing in the first few hours. Check that it has drunk colostrum, because without it the cria cannot fight infection. Many vets take a blood sample at about a day old to check antibody levels. The dam should pass the afterbirth within a few hours.

The female can be bred again about two weeks after birth, and some farms do so. Whether she should is a question for your vet, after looking at her body condition and how well she is feeding the cria.

Keeping records that help next season#

Record the breeding date, the male, the date of any progesterone or ultrasound check, and the birth date and weight of the cria. Over several seasons a small herd builds a useful picture of how long each female actually carries. Mark the end of the window on the calendar too, so a cria that arrives at day 355 is something you expected, not something you worry over.

Heat stress and late pregnancy#

Llamas carry thick fleece, and a heavily pregnant female in hot weather can struggle. If your climate is warm, shearing before the final stretch, plus shade and cool water, makes her more comfortable and helps the cria’s development. Check with your vet about local conditions.

Last reviewed October 2026 by the Calclulo team.