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Gestation. Giraffes are pregnant for a period between 14 and 15 months, or 453 to 464 days, one of longest gestation periods in the animal kingdom. Giraffes usually give birth to one offspring at a time, although twins are born occasionally. Because the gestation period is so long, the giraffe won't give birth to another baby for 16 months or more.
How long does labor usually last during a first-time birth? How long is each stage? - Kim in Pennsylvania The expert answers During a first-time birth, a first labor lasts 16 hours on average, however, this can vary tremendously. Labor can be divided into three stages. Stage one, where the cervix dilates, is subdivided into three phases, early, active and transition. Early labor is the longest part, lasting eight to 10 hours. In this phase, the cervix opens from 0 to 3 cm. Contractions are mild and between five and 20 minutes apart. You may feel excited and relieved during this part of your labor.